ICD↔CPT crosswalk
CPT 92521: ICD-10 codes that support medical necessity
These ICD-10-CM diagnoses support medical necessity for CPT 92521 under Medicare coverage policies (LCDs, NCDs, and Billing & Coding articles). Billing CPT 92521 with a diagnosis that isn't covered typically denies as CARC 50 — not medically necessary.
National approximation. Coverage varies by MAC and state — confirm against the specific LCD/NCD and article that applies to your jurisdiction and date of service.
| ICD-10 | Description |
|---|---|
| A52.17 | General paresis |
| A69.0 | Necrotizing ulcerative stomatitis |
| A81.00 | Creutzfeldt-Jakob disease, unspecified |
| A81.01 | Variant Creutzfeldt-Jakob disease |
| A81.09 | Other Creutzfeldt-Jakob disease |
| C09.0 | Malignant neoplasm of tonsillar fossa |
| C09.1 | Malignant neoplasm of tonsillar pillar (anterior) (posterior) |
| C09.8 | Malignant neoplasm of overlapping sites of tonsil |
| C09.9 | Malignant neoplasm of tonsil, unspecified |
| C10.0 | Malignant neoplasm of vallecula |
| C10.1 | Malignant neoplasm of anterior surface of epiglottis |
| C10.2 | Malignant neoplasm of lateral wall of oropharynx |
| C10.3 | Malignant neoplasm of posterior wall of oropharynx |
| C10.4 | Malignant neoplasm of branchial cleft |
| C10.8 | Malignant neoplasm of overlapping sites of oropharynx |
| C10.9 | Malignant neoplasm of oropharynx, unspecified |
| C12 | Malignant neoplasm of pyriform sinus |
| C13.0 | Malignant neoplasm of postcricoid region |
| C13.1 | Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect |
| C13.2 | Malignant neoplasm of posterior wall of hypopharynx |
| C13.8 | Malignant neoplasm of overlapping sites of hypopharynx |
| C13.9 | Malignant neoplasm of hypopharynx, unspecified |
| C14.0 | Malignant neoplasm of pharynx, unspecified |
| C14.2 | Malignant neoplasm of Waldeyer's ring |
| C14.8 | Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx |
| C32.0 | Malignant neoplasm of glottis |
| C32.1 | Malignant neoplasm of supraglottis |
| C32.2 | Malignant neoplasm of subglottis |
| C32.3 | Malignant neoplasm of laryngeal cartilage |
| C32.8 | Malignant neoplasm of overlapping sites of larynx |
| C32.9 | Malignant neoplasm of larynx, unspecified |
| D14.1 | Benign neoplasm of larynx |
| D38.0 | Neoplasm of uncertain behavior of larynx |
| E75.00 | GM2 gangliosidosis, unspecified |
| E75.01 | Sandhoff disease |
| E75.02 | Tay-Sachs disease |
| E75.09 | Other GM2 gangliosidosis |
| E75.11 | Mucolipidosis IV |
| E75.19 | Other gangliosidosis |
| E75.27 | Pelizaeus-Merzbacher disease |
| E75.28 | Canavan disease |
| E75.4 | Neuronal ceroid lipofuscinosis |
| E83.01 | Wilson's disease |
| E83.09 | Other disorders of copper metabolism |
| F01.50 | Vascular dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F01.511 | Vascular dementia, unspecified severity, with agitation |
| F01.518 | Vascular dementia, unspecified severity, with other behavioral disturbance |
| F01.52 | Vascular dementia, unspecified severity, with psychotic disturbance |
| F01.53 | Vascular dementia, unspecified severity, with mood disturbance |
| F01.54 | Vascular dementia, unspecified severity, with anxiety |
| F01.A0 | Vascular dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F01.A11 | Vascular dementia, mild, with agitation |
| F01.A18 | Vascular dementia, mild, with other behavioral disturbance |
| F01.A2 | Vascular dementia, mild, with psychotic disturbance |
| F01.A3 | Vascular dementia, mild, with mood disturbance |
| F01.A4 | Vascular dementia, mild, with anxiety |
| F01.B0 | Vascular dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F01.B11 | Vascular dementia, moderate, with agitation |
| F01.B18 | Vascular dementia, moderate, with other behavioral disturbance |
| F01.B2 | Vascular dementia, moderate, with psychotic disturbance |
| F01.B3 | Vascular dementia, moderate, with mood disturbance |
| F01.B4 | Vascular dementia, moderate, with anxiety |
| F01.C0 | Vascular dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F01.C11 | Vascular dementia, severe, with agitation |
| F01.C18 | Vascular dementia, severe, with other behavioral disturbance |
| F01.C2 | Vascular dementia, severe, with psychotic disturbance |
| F01.C3 | Vascular dementia, severe, with mood disturbance |
| F01.C4 | Vascular dementia, severe, with anxiety |
| F02.80 | Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F02.811 | Dementia in other diseases classified elsewhere, unspecified severity, with agitation |
| F02.818 | Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance |
| F02.82 | Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance |
| F02.83 | Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance |
| F02.84 | Dementia in other diseases classified elsewhere, unspecified severity, with anxiety |
| F02.A0 | Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F02.A11 | Dementia in other diseases classified elsewhere, mild, with agitation |
| F02.A18 | Dementia in other diseases classified elsewhere, mild, with other behavioral disturbance |
| F02.A2 | Dementia in other diseases classified elsewhere, mild, with psychotic disturbance |
| F02.A3 | Dementia in other diseases classified elsewhere, mild, with mood disturbance |
| F02.A4 | Dementia in other diseases classified elsewhere, mild, with anxiety |
| F02.B0 | Dementia in other diseases classified elsewhere, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F02.B11 | Dementia in other diseases classified elsewhere, moderate, with agitation |
| F02.B18 | Dementia in other diseases classified elsewhere, moderate, with other behavioral disturbance |
| F02.B2 | Dementia in other diseases classified elsewhere, moderate, with psychotic disturbance |
| F02.B3 | Dementia in other diseases classified elsewhere, moderate, with mood disturbance |
| F02.B4 | Dementia in other diseases classified elsewhere, moderate, with anxiety |
| F02.C0 | Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F02.C11 | Dementia in other diseases classified elsewhere, severe, with agitation |
| F02.C18 | Dementia in other diseases classified elsewhere, severe, with other behavioral disturbance |
| F02.C2 | Dementia in other diseases classified elsewhere, severe, with psychotic disturbance |
| F02.C3 | Dementia in other diseases classified elsewhere, severe, with mood disturbance |
| F02.C4 | Dementia in other diseases classified elsewhere, severe, with anxiety |
| F03.90 | Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F03.911 | Unspecified dementia, unspecified severity, with agitation |
| F03.918 | Unspecified dementia, unspecified severity, with other behavioral disturbance |
| F03.92 | Unspecified dementia, unspecified severity, with psychotic disturbance |
| F03.93 | Unspecified dementia, unspecified severity, with mood disturbance |
| F03.94 | Unspecified dementia, unspecified severity, with anxiety |
| F03.A0 | Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F03.A11 | Unspecified dementia, mild, with agitation |
| F03.A18 | Unspecified dementia, mild, with other behavioral disturbance |
| F03.A2 | Unspecified dementia, mild, with psychotic disturbance |
| F03.A3 | Unspecified dementia, mild, with mood disturbance |
| F03.A4 | Unspecified dementia, mild, with anxiety |
| F03.B0 | Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F03.B11 | Unspecified dementia, moderate, with agitation |
| F03.B18 | Unspecified dementia, moderate, with other behavioral disturbance |
| F03.B2 | Unspecified dementia, moderate, with psychotic disturbance |
| F03.B3 | Unspecified dementia, moderate, with mood disturbance |
| F03.B4 | Unspecified dementia, moderate, with anxiety |
| F03.C0 | Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety |
| F03.C11 | Unspecified dementia, severe, with agitation |
| F03.C18 | Unspecified dementia, severe, with other behavioral disturbance |
| F03.C2 | Unspecified dementia, severe, with psychotic disturbance |
| F03.C3 | Unspecified dementia, severe, with mood disturbance |
| F03.C4 | Unspecified dementia, severe, with anxiety |
| F05 | Delirium due to known physiological condition |
| F06.0 | Psychotic disorder with hallucinations due to known physiological condition |
| F06.1 | Catatonic disorder due to known physiological condition |
| F06.8 | Other specified mental disorders due to known physiological condition |
| F07.0 | Personality change due to known physiological condition |
| F07.81 | Postconcussional syndrome |
| F07.89 | Other personality and behavioral disorders due to known physiological condition |
| F48.2 | Pseudobulbar affect |
| F80.0 | Phonological disorder |
| F80.1 | Expressive language disorder |
| F80.2 | Mixed receptive-expressive language disorder |
| F80.4 | Speech and language development delay due to hearing loss |
| F80.81 | Childhood onset fluency disorder |
| F80.82 | Social pragmatic communication disorder |
| F80.89 | Other developmental disorders of speech and language |
| F80.9 | Developmental disorder of speech and language, unspecified |
| F81.0 | Specific reading disorder |
| F81.2 | Mathematics disorder |
| F81.81 | Disorder of written expression |
| F81.89 | Other developmental disorders of scholastic skills |
| F82 | Specific developmental disorder of motor function |
| F88 | Other disorders of psychological development |
| F90.2 | Attention-deficit hyperactivity disorder, combined type |
| F95.2 | Tourette's disorder |
| F98.29 | Other feeding disorders of infancy and early childhood |
| F98.5 | Adult onset fluency disorder |
| G10 | Huntington's disease |
| G12.21 | Amyotrophic lateral sclerosis |
| G12.25 | Progressive spinal muscle atrophy |
| G13.2 | Systemic atrophy primarily affecting the central nervous system in myxedema |
| G13.8 | Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere |
| G20.A1 | Parkinson's disease without dyskinesia, without mention of fluctuations |
| G20.A2 | Parkinson's disease without dyskinesia, with fluctuations |
| G20.B1 | Parkinson's disease with dyskinesia, without mention of fluctuations |
| G20.B2 | Parkinson's disease with dyskinesia, with fluctuations |
| G21.0 | Malignant neuroleptic syndrome |
| G21.11 | Neuroleptic induced parkinsonism |
| G21.19 | Other drug induced secondary parkinsonism |
| G21.2 | Secondary parkinsonism due to other external agents |
| G21.3 | Postencephalitic parkinsonism |
| G21.4 | Vascular parkinsonism |
| G21.8 | Other secondary parkinsonism |
| G21.9 | Secondary parkinsonism, unspecified |
| G23.0 | Hallervorden-Spatz disease |
| G23.1 | Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] |
| G23.2 | Striatonigral degeneration |
| G23.8 | Other specified degenerative diseases of basal ganglia |
| G23.9 | Degenerative disease of basal ganglia, unspecified |
| G24.01 | Drug induced subacute dyskinesia |
| G24.09 | Other drug induced dystonia |
| G24.1 | Genetic torsion dystonia |
| G24.2 | Idiopathic nonfamilial dystonia |
| G24.3 | Spasmodic torticollis |
| G24.4 | Idiopathic orofacial dystonia |
| G24.5 | Blepharospasm |
| G24.8 | Other dystonia |
| G24.9 | Dystonia, unspecified |
| G25.3 | Myoclonus |
| G25.4 | Drug-induced chorea |
| G25.5 | Other chorea |
| G25.70 | Drug induced movement disorder, unspecified |
| G25.71 | Drug induced akathisia |
| G25.79 | Other drug induced movement disorders |
| G25.81 | Restless legs syndrome |
| G25.82 | Stiff-man syndrome |
| G25.83 | Benign shuddering attacks |
| G25.89 | Other specified extrapyramidal and movement disorders |
| G25.9 | Extrapyramidal and movement disorder, unspecified |
| G26 | Extrapyramidal and movement disorders in diseases classified elsewhere |
| G30.0 | Alzheimer's disease with early onset |
| G30.1 | Alzheimer's disease with late onset |
| G30.8 | Other Alzheimer's disease |
| G30.9 | Alzheimer's disease, unspecified |
| G31.01 | Pick's disease |
| G31.09 | Other frontotemporal neurocognitive disorder |
| G31.1 | Senile degeneration of brain, not elsewhere classified |
| G31.2 | Degeneration of nervous system due to alcohol |
| G31.80 | Leukodystrophy, unspecified |
| G31.83 | Neurocognitive disorder with Lewy bodies |
| G31.84 | Mild cognitive impairment of uncertain or unknown etiology |
| G31.85 | Corticobasal degeneration |
| G31.86 | Alexander disease |
| G31.87 | Primary progressive apraxia of speech |
| G31.89 | Other specified degenerative diseases of nervous system |
| G31.9 | Degenerative disease of nervous system, unspecified |
| G35.A | Relapsing-remitting multiple sclerosis |
| G35.B0 | Primary progressive multiple sclerosis, unspecified |
| G35.B1 | Active primary progressive multiple sclerosis |
| G35.B2 | Non-active primary progressive multiple sclerosis |
| G35.C0 | Secondary progressive multiple sclerosis, unspecified |
| G35.C1 | Active secondary progressive multiple sclerosis |
| G35.C2 | Non-active secondary progressive multiple sclerosis |
| G35.D | Multiple sclerosis, unspecified |
| G36.0 | Neuromyelitis optica [Devic] |
| G36.1 | Acute and subacute hemorrhagic leukoencephalitis [Hurst] |
| G36.8 | Other specified acute disseminated demyelination |
| G36.9 | Acute disseminated demyelination, unspecified |
| G37.0 | Diffuse sclerosis of central nervous system |
| G37.1 | Central demyelination of corpus callosum |
| G37.2 | Central pontine myelinolysis |
| G37.3 | Acute transverse myelitis in demyelinating disease of central nervous system |
| G37.4 | Subacute necrotizing myelitis of central nervous system |
| G37.5 | Concentric sclerosis [Balo] of central nervous system |
| G37.89 | Other specified demyelinating diseases of central nervous system |
| G37.9 | Demyelinating disease of central nervous system, unspecified |
| G40.001 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus |
| G40.009 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus |
| G40.011 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, with status epilepticus |
| G40.019 | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus |
| G40.101 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus |
| G40.109 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, without status epilepticus |
| G40.111 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus |
| G40.119 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus |
| G40.201 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, with status epilepticus |
| G40.209 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus |
| G40.211 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus |
| G40.219 | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus |
| G40.301 | Generalized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus |
| G40.309 | Generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus |
| G40.311 | Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus |
| G40.319 | Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus |
| G40.401 | Other generalized epilepsy and epileptic syndromes, not intractable, with status epilepticus |
| G40.409 | Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus |
| G40.411 | Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus |
| G40.419 | Other generalized epilepsy and epileptic syndromes, intractable, without status epilepticus |
| G40.42 | Cyclin-Dependent Kinase-Like 5 Deficiency Disorder |
| G40.501 | Epileptic seizures related to external causes, not intractable, with status epilepticus |
| G40.509 | Epileptic seizures related to external causes, not intractable, without status epilepticus |
| G40.801 | Other epilepsy, not intractable, with status epilepticus |
| G40.802 | Other epilepsy, not intractable, without status epilepticus |
| G40.803 | Other epilepsy, intractable, with status epilepticus |
| G40.804 | Other epilepsy, intractable, without status epilepticus |
| G40.811 | Lennox-Gastaut syndrome, not intractable, with status epilepticus |
| G40.812 | Lennox-Gastaut syndrome, not intractable, without status epilepticus |
| G40.813 | Lennox-Gastaut syndrome, intractable, with status epilepticus |
| G40.814 | Lennox-Gastaut syndrome, intractable, without status epilepticus |
| G40.821 | Epileptic spasms, not intractable, with status epilepticus |
| G40.822 | Epileptic spasms, not intractable, without status epilepticus |
| G40.823 | Epileptic spasms, intractable, with status epilepticus |
| G40.824 | Epileptic spasms, intractable, without status epilepticus |
| G40.833 | Dravet syndrome, intractable, with status epilepticus |
| G40.834 | Dravet syndrome, intractable, without status epilepticus |
| G40.841 | KCNQ2-related epilepsy, not intractable, with status epilepticus |
| G40.842 | KCNQ2-related epilepsy, not intractable, without status epilepticus |
| G40.843 | KCNQ2-related epilepsy, intractable, with status epilepticus |
| G40.844 | KCNQ2-related epilepsy, intractable, without status epilepticus |
| G40.89 | Other seizures |
| G40.901 | Epilepsy, unspecified, not intractable, with status epilepticus |
| G40.909 | Epilepsy, unspecified, not intractable, without status epilepticus |
| G40.911 | Epilepsy, unspecified, intractable, with status epilepticus |
| G40.919 | Epilepsy, unspecified, intractable, without status epilepticus |
| G40.A01 | Absence epileptic syndrome, not intractable, with status epilepticus |
| G40.A09 | Absence epileptic syndrome, not intractable, without status epilepticus |
| G40.A11 | Absence epileptic syndrome, intractable, with status epilepticus |
| G40.A19 | Absence epileptic syndrome, intractable, without status epilepticus |
| G40.B01 | Juvenile myoclonic epilepsy, not intractable, with status epilepticus |
| G40.B09 | Juvenile myoclonic epilepsy, not intractable, without status epilepticus |
| G40.B11 | Juvenile myoclonic epilepsy, intractable, with status epilepticus |
| G40.B19 | Juvenile myoclonic epilepsy, intractable, without status epilepticus |
| G45.0 | Vertebro-basilar artery syndrome |
| G45.1 | Carotid artery syndrome (hemispheric) |
| G45.2 | Multiple and bilateral precerebral artery syndromes |
| G45.8 | Other transient cerebral ischemic attacks and related syndromes |
| G45.9 | Transient cerebral ischemic attack, unspecified |
| G46.0 | Middle cerebral artery syndrome |
| G46.1 | Anterior cerebral artery syndrome |
| G46.2 | Posterior cerebral artery syndrome |
| G51.0 | Bell's palsy |
| G51.1 | Geniculate ganglionitis |
| G51.2 | Melkersson's syndrome |
| G51.4 | Facial myokymia |
| G51.8 | Other disorders of facial nerve |
| G51.9 | Disorder of facial nerve, unspecified |
| G52.1 | Disorders of glossopharyngeal nerve |
| G52.2 | Disorders of vagus nerve |
| G52.3 | Disorders of hypoglossal nerve |
| G52.7 | Disorders of multiple cranial nerves |
| G52.8 | Disorders of other specified cranial nerves |
| G60.8 | Other hereditary and idiopathic neuropathies |
| G70.00 | Myasthenia gravis without (acute) exacerbation |
| G70.01 | Myasthenia gravis with (acute) exacerbation |
| G70.1 | Toxic myoneural disorders |
| G70.2 | Congenital and developmental myasthenia |
| G70.80 | Lambert-Eaton syndrome, unspecified |
| G70.81 | Lambert-Eaton syndrome in disease classified elsewhere |
| G70.89 | Other specified myoneural disorders |
| G70.9 | Myoneural disorder, unspecified |
| G71.11 | Myotonic muscular dystrophy |
| G71.12 | Myotonia congenita |
| G71.13 | Myotonic chondrodystrophy |
| G71.14 | Drug induced myotonia |
| G71.19 | Other specified myotonic disorders |
| G71.20 | Congenital myopathy, unspecified |
| G71.21 | Nemaline myopathy |
| G71.220 | X-linked myotubular myopathy |
| G71.228 | Other centronuclear myopathy |
| G71.29 | Other congenital myopathy |
| G72.0 | Drug-induced myopathy |
| G72.1 | Alcoholic myopathy |
| G72.2 | Myopathy due to other toxic agents |
| G72.3 | Periodic paralysis |
| G73.1 | Lambert-Eaton syndrome in neoplastic disease |
| G80.0 | Spastic quadriplegic cerebral palsy |
| G80.1 | Spastic diplegic cerebral palsy |
| G80.2 | Spastic hemiplegic cerebral palsy |
| G80.3 | Athetoid cerebral palsy |
| G80.4 | Ataxic cerebral palsy |
| G80.8 | Other cerebral palsy |
| G80.9 | Cerebral palsy, unspecified |
| G81.00 | Flaccid hemiplegia affecting unspecified side |
| G81.01 | Flaccid hemiplegia affecting right dominant side |
| G81.02 | Flaccid hemiplegia affecting left dominant side |
| G81.03 | Flaccid hemiplegia affecting right nondominant side |
| G81.04 | Flaccid hemiplegia affecting left nondominant side |
| G81.10 | Spastic hemiplegia affecting unspecified side |
| G81.11 | Spastic hemiplegia affecting right dominant side |
| G81.12 | Spastic hemiplegia affecting left dominant side |
| G81.13 | Spastic hemiplegia affecting right nondominant side |
| G81.14 | Spastic hemiplegia affecting left nondominant side |
| G81.90 | Hemiplegia, unspecified affecting unspecified side |
| G81.91 | Hemiplegia, unspecified affecting right dominant side |
| G81.92 | Hemiplegia, unspecified affecting left dominant side |
| G81.93 | Hemiplegia, unspecified affecting right nondominant side |
| G81.94 | Hemiplegia, unspecified affecting left nondominant side |
| G83.5 | Locked-in state |
| G83.81 | Brown-Sequard syndrome |
| G83.82 | Anterior cord syndrome |
| G83.83 | Posterior cord syndrome |
| G83.84 | Todd's paralysis (postepileptic) |
| G83.89 | Other specified paralytic syndromes |
| G83.9 | Paralytic syndrome, unspecified |
| G90.1 | Familial dysautonomia [Riley-Day] |
| G90.3 | Multi-system degeneration of the autonomic nervous system |
| G91.0 | Communicating hydrocephalus |
| G91.1 | Obstructive hydrocephalus |
| G91.2 | (Idiopathic) normal pressure hydrocephalus |
| G91.3 | Post-traumatic hydrocephalus, unspecified |
| G91.4 | Hydrocephalus in diseases classified elsewhere |
| G91.8 | Other hydrocephalus |
| G91.9 | Hydrocephalus, unspecified |
| G93.7 | Reye's syndrome |
| G94 | Other disorders of brain in diseases classified elsewhere |
| H90.0 | Conductive hearing loss, bilateral |
| H90.11 | Conductive hearing loss, unilateral, right ear, with unrestricted hearing on the contralateral side |
| H90.12 | Conductive hearing loss, unilateral, left ear, with unrestricted hearing on the contralateral side |
| H90.2 | Conductive hearing loss, unspecified |
| H90.3 | Sensorineural hearing loss, bilateral |
| H90.41 | Sensorineural hearing loss, unilateral, right ear, with unrestricted hearing on the contralateral side |
| H90.42 | Sensorineural hearing loss, unilateral, left ear, with unrestricted hearing on the contralateral side |
| H90.5 | Unspecified sensorineural hearing loss |
| H90.6 | Mixed conductive and sensorineural hearing loss, bilateral |
| H90.71 | Mixed conductive and sensorineural hearing loss, unilateral, right ear, with unrestricted hearing on the contralateral side |
| H90.72 | Mixed conductive and sensorineural hearing loss, unilateral, left ear, with unrestricted hearing on the contralateral side |
| H90.8 | Mixed conductive and sensorineural hearing loss, unspecified |
| H90.A11 | Conductive hearing loss, unilateral, right ear with restricted hearing on the contralateral side |
| H90.A12 | Conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side |
| H90.A21 | Sensorineural hearing loss, unilateral, right ear, with restricted hearing on the contralateral side |
| H90.A22 | Sensorineural hearing loss, unilateral, left ear, with restricted hearing on the contralateral side |
| H90.A31 | Mixed conductive and sensorineural hearing loss, unilateral, right ear with restricted hearing on the contralateral side |
| H90.A32 | Mixed conductive and sensorineural hearing loss, unilateral, left ear with restricted hearing on the contralateral side |
| H91.10 | Presbycusis, unspecified ear |
| H91.3 | Deaf nonspeaking, not elsewhere classified |
| H91.93 | Unspecified hearing loss, bilateral |
| H93.221 | Diplacusis, right ear |
| H93.222 | Diplacusis, left ear |
| H93.223 | Diplacusis, bilateral |
| H93.241 | Temporary auditory threshold shift, right ear |
| H93.242 | Temporary auditory threshold shift, left ear |
| H93.243 | Temporary auditory threshold shift, bilateral |
| H93.249 | Temporary auditory threshold shift, unspecified ear |
| H93.25 | Central auditory processing disorder |
| H93.291 | Other abnormal auditory perceptions, right ear |
| H93.292 | Other abnormal auditory perceptions, left ear |
| H93.293 | Other abnormal auditory perceptions, bilateral |
| H93.299 | Other abnormal auditory perceptions, unspecified ear |
| H93.90 | Unspecified disorder of ear, unspecified ear |
| H93.91 | Unspecified disorder of right ear |
| H93.92 | Unspecified disorder of left ear |
| H93.93 | Unspecified disorder of ear, bilateral |
| I67.841 | Reversible cerebrovascular vasoconstriction syndrome |
| I67.848 | Other cerebrovascular vasospasm and vasoconstriction |
| I67.89 | Other cerebrovascular disease |
| I69.010 | Attention and concentration deficit following nontraumatic subarachnoid hemorrhage |
| I69.011 | Memory deficit following nontraumatic subarachnoid hemorrhage |
Showing the first 400 of 1483 covered codes — this procedure has a large covered-diagnosis set; see the governing LCD/article for the complete list.
Frequently asked questions
Which ICD-10 codes support medical necessity for CPT 92521?
Medicare coverage policies (LCDs/NCDs and Billing & Coding articles) list 1483 ICD-10 diagnosis codes that support medical necessity for CPT 92521. The covered codes are listed on this page. Coverage varies by MAC/state — always confirm against the policy that applies to you.
What is a medical-necessity (LCD/NCD) crosswalk?
A claim whose procedure isn't supported by a covered diagnosis denies as "not medically necessary" (CARC 50). CMS coverage policies define which diagnoses justify a procedure; this page is the ICD-10 → CPT 92521 view of that relationship.
Catch medical-necessity denials before you bill. CareNiva scrubs claims against LCD/NCD coverage and flags unsupported diagnoses — in the same platform you run visits and billing.
More free billing tools: all crosswalks · NCCI edits · Medicare fees · denial codes
Informational only, not coding, billing, or legal advice. Based on CMS Medicare Coverage Database data; verify the current LCD/NCD for your MAC before billing.
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