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ICD↔CPT crosswalk

CPT 70371: ICD-10 codes that support medical necessity

317 covered diagnosis codes under Medicare coverage policies (LCD/NCD)

These ICD-10-CM diagnoses support medical necessity for CPT 70371 under Medicare coverage policies (LCDs, NCDs, and Billing & Coding articles). Billing CPT 70371 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-10Description
B91Sequelae of poliomyelitis
C01Malignant neoplasm of base of tongue
C02.0Malignant neoplasm of dorsal surface of tongue
C02.1Malignant neoplasm of border of tongue
C02.2Malignant neoplasm of ventral surface of tongue
C02.3Malignant neoplasm of anterior two-thirds of tongue, part unspecified
C02.4Malignant neoplasm of lingual tonsil
C02.8Malignant neoplasm of overlapping sites of tongue
C02.9Malignant neoplasm of tongue, unspecified
C04.1Malignant neoplasm of lateral floor of mouth
C04.8Malignant neoplasm of overlapping sites of floor of mouth
C04.9Malignant neoplasm of floor of mouth, unspecified
C05.0Malignant neoplasm of hard palate
C05.1Malignant neoplasm of soft palate
C05.2Malignant neoplasm of uvula
C05.8Malignant neoplasm of overlapping sites of palate
C05.9Malignant neoplasm of palate, unspecified
C06.1Malignant neoplasm of vestibule of mouth
C06.2Malignant neoplasm of retromolar area
C06.80Malignant neoplasm of overlapping sites of unspecified parts of mouth
C06.89Malignant neoplasm of overlapping sites of other parts of mouth
C06.9Malignant neoplasm of mouth, unspecified
C07Malignant neoplasm of parotid gland
C08.0Malignant neoplasm of submandibular gland
C08.1Malignant neoplasm of sublingual gland
C08.9Malignant neoplasm of major salivary gland, unspecified
C09.0Malignant neoplasm of tonsillar fossa
C09.1Malignant neoplasm of tonsillar pillar (anterior) (posterior)
C09.8Malignant neoplasm of overlapping sites of tonsil
C09.9Malignant neoplasm of tonsil, unspecified
C10.0Malignant neoplasm of vallecula
C10.1Malignant neoplasm of anterior surface of epiglottis
C10.2Malignant neoplasm of lateral wall of oropharynx
C10.3Malignant neoplasm of posterior wall of oropharynx
C10.4Malignant neoplasm of branchial cleft
C10.8Malignant neoplasm of overlapping sites of oropharynx
C10.9Malignant neoplasm of oropharynx, unspecified
C11.0Malignant neoplasm of superior wall of nasopharynx
C11.1Malignant neoplasm of posterior wall of nasopharynx
C11.2Malignant neoplasm of lateral wall of nasopharynx
C11.3Malignant neoplasm of anterior wall of nasopharynx
C11.8Malignant neoplasm of overlapping sites of nasopharynx
C11.9Malignant neoplasm of nasopharynx, unspecified
C12Malignant neoplasm of pyriform sinus
C13.0Malignant neoplasm of postcricoid region
C13.1Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect
C13.2Malignant neoplasm of posterior wall of hypopharynx
C13.8Malignant neoplasm of overlapping sites of hypopharynx
C13.9Malignant neoplasm of hypopharynx, unspecified
C14.0Malignant neoplasm of pharynx, unspecified
C14.2Malignant neoplasm of Waldeyer's ring
C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx
C15.3Malignant neoplasm of upper third of esophagus
C15.4Malignant neoplasm of middle third of esophagus
C15.5Malignant neoplasm of lower third of esophagus
C15.8Malignant neoplasm of overlapping sites of esophagus
C15.9Malignant neoplasm of esophagus, unspecified
C30.0Malignant neoplasm of nasal cavity
C32.0Malignant neoplasm of glottis
C32.1Malignant neoplasm of supraglottis
C32.2Malignant neoplasm of subglottis
C32.3Malignant neoplasm of laryngeal cartilage
C32.8Malignant neoplasm of overlapping sites of larynx
C32.9Malignant neoplasm of larynx, unspecified
C49.A1Gastrointestinal stromal tumor of esophagus
C76.0Malignant neoplasm of head, face and neck
C78.31Secondary malignant neoplasm of larynx
C78.32Secondary malignant neoplasm of pharynx
C79.83Secondary malignant neoplasm of oral cavity
F01.50Vascular dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
F01.A0Vascular dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
F01.B0Vascular dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
F01.C0Vascular dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
F95.2Tourette's disorder
G12.21Amyotrophic lateral sclerosis
G12.22Progressive bulbar palsy
G12.23Primary lateral sclerosis
G12.24Familial motor neuron disease
G12.29Other motor neuron disease
G12.8Other spinal muscular atrophies and related syndromes
G14Postpolio syndrome
G20.A1Parkinson's disease without dyskinesia, without mention of fluctuations
G20.A2Parkinson's disease without dyskinesia, with fluctuations
G20.B1Parkinson's disease with dyskinesia, without mention of fluctuations
G20.B2Parkinson's disease with dyskinesia, with fluctuations
G21.11Neuroleptic induced parkinsonism
G21.2Secondary parkinsonism due to other external agents
G21.3Postencephalitic parkinsonism
G21.4Vascular parkinsonism
G21.8Other secondary parkinsonism
G21.9Secondary parkinsonism, unspecified
G30.0Alzheimer's disease with early onset
G30.1Alzheimer's disease with late onset
G30.8Other Alzheimer's disease
G30.9Alzheimer's disease, unspecified
G35.ARelapsing-remitting multiple sclerosis
G35.B0Primary progressive multiple sclerosis, unspecified
G35.B1Active primary progressive multiple sclerosis
G35.B2Non-active primary progressive multiple sclerosis
G35.C0Secondary progressive multiple sclerosis, unspecified
G35.C1Active secondary progressive multiple sclerosis
G35.C2Non-active secondary progressive multiple sclerosis
G35.DMultiple sclerosis, unspecified
G37.89Other specified demyelinating diseases of central nervous system
G37.9Demyelinating disease of central nervous system, unspecified
G40.909Epilepsy, unspecified, not intractable, without status epilepticus
G70.00Myasthenia gravis without (acute) exacerbation
G70.01Myasthenia gravis with (acute) exacerbation
G70.80Lambert-Eaton syndrome, unspecified
G70.81Lambert-Eaton syndrome in disease classified elsewhere
G71.00Muscular dystrophy, unspecified
G71.01Duchenne or Becker muscular dystrophy
G71.02Facioscapulohumeral muscular dystrophy
G71.031Autosomal dominant limb girdle muscular dystrophy
G71.032Autosomal recessive limb girdle muscular dystrophy due to calpain-3 dysfunction
G71.033Limb girdle muscular dystrophy due to dysferlin dysfunction
G71.0340Limb girdle muscular dystrophy due to sarcoglycan dysfunction, unspecified
G71.0341Limb girdle muscular dystrophy due to alpha sarcoglycan dysfunction
G71.0342Limb girdle muscular dystrophy due to beta sarcoglycan dysfunction
G71.0349Limb girdle muscular dystrophy due to other sarcoglycan dysfunction
G71.035Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
G71.036Limb girdle muscular dystrophy due to fukutin related protein dysfunction
G71.038Other limb girdle muscular dystrophy
G71.039Limb girdle muscular dystrophy, unspecified
G71.09Other specified muscular dystrophies
G73.1Lambert-Eaton syndrome in neoplastic disease
G82.50Quadriplegia, unspecified
G82.51Quadriplegia, C1-C4 complete
G82.52Quadriplegia, C1-C4 incomplete
G82.53Quadriplegia, C5-C7 complete
G82.54Quadriplegia, C5-C7 incomplete
I63.013Cerebral infarction due to thrombosis of bilateral vertebral arteries
I63.033Cerebral infarction due to thrombosis of bilateral carotid arteries
I63.113Cerebral infarction due to embolism of bilateral vertebral arteries
I63.133Cerebral infarction due to embolism of bilateral carotid arteries
I63.213Cerebral infarction due to unspecified occlusion or stenosis of bilateral vertebral arteries
I63.233Cerebral infarction due to unspecified occlusion or stenosis of bilateral carotid arteries
I63.311Cerebral infarction due to thrombosis of right middle cerebral artery
I63.312Cerebral infarction due to thrombosis of left middle cerebral artery
I63.313Cerebral infarction due to thrombosis of bilateral middle cerebral arteries
I63.321Cerebral infarction due to thrombosis of right anterior cerebral artery
I63.322Cerebral infarction due to thrombosis of left anterior cerebral artery
I63.323Cerebral infarction due to thrombosis of bilateral anterior cerebral arteries
I63.331Cerebral infarction due to thrombosis of right posterior cerebral artery
I63.332Cerebral infarction due to thrombosis of left posterior cerebral artery
I63.333Cerebral infarction due to thrombosis of bilateral posterior cerebral arteries
I63.341Cerebral infarction due to thrombosis of right cerebellar artery
I63.342Cerebral infarction due to thrombosis of left cerebellar artery
I63.343Cerebral infarction due to thrombosis of bilateral cerebellar arteries
I63.39Cerebral infarction due to thrombosis of other cerebral artery
I63.411Cerebral infarction due to embolism of right middle cerebral artery
I63.412Cerebral infarction due to embolism of left middle cerebral artery
I63.413Cerebral infarction due to embolism of bilateral middle cerebral arteries
I63.421Cerebral infarction due to embolism of right anterior cerebral artery
I63.422Cerebral infarction due to embolism of left anterior cerebral artery
I63.423Cerebral infarction due to embolism of bilateral anterior cerebral arteries
I63.431Cerebral infarction due to embolism of right posterior cerebral artery
I63.432Cerebral infarction due to embolism of left posterior cerebral artery
I63.433Cerebral infarction due to embolism of bilateral posterior cerebral arteries
I63.441Cerebral infarction due to embolism of right cerebellar artery
I63.442Cerebral infarction due to embolism of left cerebellar artery
I63.443Cerebral infarction due to embolism of bilateral cerebellar arteries
I63.49Cerebral infarction due to embolism of other cerebral artery
I63.511Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery
I63.512Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery
I63.513Cerebral infarction due to unspecified occlusion or stenosis of bilateral middle cerebral arteries
I63.521Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral artery
I63.522Cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral artery
I63.523Cerebral infarction due to unspecified occlusion or stenosis of bilateral anterior cerebral arteries
I63.531Cerebral infarction due to unspecified occlusion or stenosis of right posterior cerebral artery
I63.532Cerebral infarction due to unspecified occlusion or stenosis of left posterior cerebral artery
I63.533Cerebral infarction due to unspecified occlusion or stenosis of bilateral posterior cerebral arteries
I63.541Cerebral infarction due to unspecified occlusion or stenosis of right cerebellar artery
I63.542Cerebral infarction due to unspecified occlusion or stenosis of left cerebellar artery
I63.543Cerebral infarction due to unspecified occlusion or stenosis of bilateral cerebellar arteries
I63.59Cerebral infarction due to unspecified occlusion or stenosis of other cerebral artery
I63.6Cerebral infarction due to cerebral venous thrombosis, nonpyogenic
I63.81Other cerebral infarction due to occlusion or stenosis of small artery
I63.89Other cerebral infarction
I63.9Cerebral infarction, unspecified
I66.02Occlusion and stenosis of left middle cerebral artery
I66.03Occlusion and stenosis of bilateral middle cerebral arteries
I66.11Occlusion and stenosis of right anterior cerebral artery
I66.12Occlusion and stenosis of left anterior cerebral artery
I66.13Occlusion and stenosis of bilateral anterior cerebral arteries
I66.21Occlusion and stenosis of right posterior cerebral artery
I66.22Occlusion and stenosis of left posterior cerebral artery
I66.23Occlusion and stenosis of bilateral posterior cerebral arteries
I66.3Occlusion and stenosis of cerebellar arteries
I66.8Occlusion and stenosis of other cerebral arteries
I67.850Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
I67.858Other hereditary cerebrovascular disease
I69.022Dysarthria following nontraumatic subarachnoid hemorrhage
I69.051Hemiplegia and hemiparesis following nontraumatic subarachnoid hemorrhage affecting right dominant side
I69.052Hemiplegia and hemiparesis following nontraumatic subarachnoid hemorrhage affecting left dominant side
I69.053Hemiplegia and hemiparesis following nontraumatic subarachnoid hemorrhage affecting right non-dominant side
I69.054Hemiplegia and hemiparesis following nontraumatic subarachnoid hemorrhage affecting left non-dominant side
I69.091Dysphagia following nontraumatic subarachnoid hemorrhage
I69.122Dysarthria following nontraumatic intracerebral hemorrhage
I69.151Hemiplegia and hemiparesis following nontraumatic intracerebral hemorrhage affecting right dominant side
I69.152Hemiplegia and hemiparesis following nontraumatic intracerebral hemorrhage affecting left dominant side
I69.153Hemiplegia and hemiparesis following nontraumatic intracerebral hemorrhage affecting right non-dominant side
I69.154Hemiplegia and hemiparesis following nontraumatic intracerebral hemorrhage affecting left non-dominant side
I69.191Dysphagia following nontraumatic intracerebral hemorrhage
I69.222Dysarthria following other nontraumatic intracranial hemorrhage
I69.251Hemiplegia and hemiparesis following other nontraumatic intracranial hemorrhage affecting right dominant side
I69.252Hemiplegia and hemiparesis following other nontraumatic intracranial hemorrhage affecting left dominant side
I69.253Hemiplegia and hemiparesis following other nontraumatic intracranial hemorrhage affecting right non-dominant side
I69.254Hemiplegia and hemiparesis following other nontraumatic intracranial hemorrhage affecting left non-dominant side
I69.291Dysphagia following other nontraumatic intracranial hemorrhage
I69.322Dysarthria following cerebral infarction
I69.351Hemiplegia and hemiparesis following cerebral infarction affecting right dominant side
I69.352Hemiplegia and hemiparesis following cerebral infarction affecting left dominant side
I69.353Hemiplegia and hemiparesis following cerebral infarction affecting right non-dominant side
I69.354Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side
I69.391Dysphagia following cerebral infarction
I69.822Dysarthria following other cerebrovascular disease
I69.851Hemiplegia and hemiparesis following other cerebrovascular disease affecting right dominant side
I69.852Hemiplegia and hemiparesis following other cerebrovascular disease affecting left dominant side
I69.853Hemiplegia and hemiparesis following other cerebrovascular disease affecting right non-dominant side
I69.854Hemiplegia and hemiparesis following other cerebrovascular disease affecting left non-dominant side
I69.891Dysphagia following other cerebrovascular disease
I69.922Dysarthria following unspecified cerebrovascular disease
I69.951Hemiplegia and hemiparesis following unspecified cerebrovascular disease affecting right dominant side
I69.952Hemiplegia and hemiparesis following unspecified cerebrovascular disease affecting left dominant side
I69.953Hemiplegia and hemiparesis following unspecified cerebrovascular disease affecting right non-dominant side
I69.954Hemiplegia and hemiparesis following unspecified cerebrovascular disease affecting left non-dominant side
I69.991Dysphagia following unspecified cerebrovascular disease
J69.0Pneumonitis due to inhalation of food and vomit
K20.0Eosinophilic esophagitis
K21.00Gastro-esophageal reflux disease with esophagitis, without bleeding
K21.01Gastro-esophageal reflux disease with esophagitis, with bleeding
K21.9Gastro-esophageal reflux disease without esophagitis
K22.0Achalasia of cardia
K22.2Esophageal obstruction
K22.5Diverticulum of esophagus, acquired
M32.10Systemic lupus erythematosus, organ or system involvement unspecified
M32.19Other organ or system involvement in systemic lupus erythematosus
M32.9Systemic lupus erythematosus, unspecified
M33.00Juvenile dermatomyositis, organ involvement unspecified
M33.01Juvenile dermatomyositis with respiratory involvement
M33.02Juvenile dermatomyositis with myopathy
M33.09Juvenile dermatomyositis with other organ involvement
M33.10Other dermatomyositis, organ involvement unspecified
M33.11Other dermatomyositis with respiratory involvement
M33.12Other dermatomyositis with myopathy
M33.19Other dermatomyositis with other organ involvement
M33.20Polymyositis, organ involvement unspecified
M33.21Polymyositis with respiratory involvement
M33.22Polymyositis with myopathy
M33.29Polymyositis with other organ involvement
M33.90Dermatopolymyositis, unspecified, organ involvement unspecified
M33.91Dermatopolymyositis, unspecified with respiratory involvement
M33.92Dermatopolymyositis, unspecified with myopathy
M33.99Dermatopolymyositis, unspecified with other organ involvement
M34.0Progressive systemic sclerosis
M34.1CR(E)ST syndrome
M34.2Systemic sclerosis induced by drug and chemical
M34.81Systemic sclerosis with lung involvement
M34.82Systemic sclerosis with myopathy
M34.83Systemic sclerosis with polyneuropathy
M34.89Other systemic sclerosis
M34.9Systemic sclerosis, unspecified
M36.0Dermato(poly)myositis in neoplastic disease
Q85.1Tuberous sclerosis
R05.1Acute cough
R05.2Subacute cough
R05.3Chronic cough
R05.4Cough syncope
R05.8Other specified cough
R05.9Cough, unspecified
R13.0Aphagia
R13.10Dysphagia, unspecified
R13.11Dysphagia, oral phase
R13.12Dysphagia, oropharyngeal phase
R13.13Dysphagia, pharyngeal phase
R13.14Dysphagia, pharyngoesophageal phase
R13.19Other dysphagia
R63.30Feeding difficulties, unspecified
R63.31Pediatric feeding disorder, acute
R63.32Pediatric feeding disorder, chronic
R63.39Other feeding difficulties
T17.200DUnspecified foreign body in pharynx causing asphyxiation, subsequent encounter
T17.200SUnspecified foreign body in pharynx causing asphyxiation, sequela
T17.208DUnspecified foreign body in pharynx causing other injury, subsequent encounter
T17.208SUnspecified foreign body in pharynx causing other injury, sequela
T17.210DGastric contents in pharynx causing asphyxiation, subsequent encounter
T17.210SGastric contents in pharynx causing asphyxiation, sequela
T17.218DGastric contents in pharynx causing other injury, subsequent encounter
T17.218SGastric contents in pharynx causing other injury, sequela
T17.220DFood in pharynx causing asphyxiation, subsequent encounter
T17.220SFood in pharynx causing asphyxiation, sequela
T17.228DFood in pharynx causing other injury, subsequent encounter
T17.228SFood in pharynx causing other injury, sequela
T17.290DOther foreign object in pharynx causing asphyxiation, subsequent encounter
T17.290SOther foreign object in pharynx causing asphyxiation, sequela
T17.298DOther foreign object in pharynx causing other injury, subsequent encounter
T17.298SOther foreign object in pharynx causing other injury, sequela
T17.300DUnspecified foreign body in larynx causing asphyxiation, subsequent encounter
T17.300SUnspecified foreign body in larynx causing asphyxiation, sequela
T17.308DUnspecified foreign body in larynx causing other injury, subsequent encounter
T17.308SUnspecified foreign body in larynx causing other injury, sequela
T17.310DGastric contents in larynx causing asphyxiation, subsequent encounter
T17.310SGastric contents in larynx causing asphyxiation, sequela
T17.318DGastric contents in larynx causing other injury, subsequent encounter
T17.318SGastric contents in larynx causing other injury, sequela
T17.320DFood in larynx causing asphyxiation, subsequent encounter
T17.320SFood in larynx causing asphyxiation, sequela
T17.328DFood in larynx causing other injury, subsequent encounter
T17.328SFood in larynx causing other injury, sequela
T17.390DOther foreign object in larynx causing asphyxiation, subsequent encounter
T17.390SOther foreign object in larynx causing asphyxiation, sequela
T17.398DOther foreign object in larynx causing other injury, subsequent encounter
T17.398SOther foreign object in larynx causing other injury, sequela
Z85.21Personal history of malignant neoplasm of larynx
Z85.818Personal history of malignant neoplasm of other sites of lip, oral cavity, and pharynx
Z85.819Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx

Frequently asked questions

Which ICD-10 codes support medical necessity for CPT 70371?

Medicare coverage policies (LCDs/NCDs and Billing & Coding articles) list 317 ICD-10 diagnosis codes that support medical necessity for CPT 70371. 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 70371 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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