A39: Meningococcal infection
Codes under A39 (Meningococcal infection). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A39.0 | Meningococcal meningitis | ✓ |
| A39.0 | Meningococcal meningitis | ✓ |
| A39.1 | Waterhouse-Friderichsen syndrome | ✓ |
| A39.1 | Waterhouse-Friderichsen syndrome | ✓ |
| A39.2 | Acute meningococcemia | ✓ |
| A39.2 | Acute meningococcemia | ✓ |
| A39.3 | Chronic meningococcemia | ✓ |
| A39.3 | Chronic meningococcemia | ✓ |
| A39.4 | Meningococcemia, unspecified | ✓ |
| A39.4 | Meningococcemia, unspecified | ✓ |
| A39.5 | Meningococcal heart disease | — |
| A39.5 | Meningococcal heart disease | — |
| A39.8 | Other meningococcal infections | — |
| A39.8 | Other meningococcal infections | — |
| A39.9 | Meningococcal infection, unspecified | ✓ |
| A39.9 | Meningococcal infection, unspecified | ✓ |
| A39.50 | Meningococcal carditis, unspecified | ✓ |
| A39.50 | Meningococcal carditis, unspecified | ✓ |
| A39.51 | Meningococcal endocarditis | ✓ |
| A39.51 | Meningococcal endocarditis | ✓ |
| A39.52 | Meningococcal myocarditis | ✓ |
| A39.52 | Meningococcal myocarditis | ✓ |
| A39.53 | Meningococcal pericarditis | ✓ |
| A39.53 | Meningococcal pericarditis | ✓ |
| A39.81 | Meningococcal encephalitis | ✓ |
| A39.81 | Meningococcal encephalitis | ✓ |
| A39.82 | Meningococcal retrobulbar neuritis | ✓ |
| A39.82 | Meningococcal retrobulbar neuritis | ✓ |
| A39.83 | Meningococcal arthritis | ✓ |
| A39.83 | Meningococcal arthritis | ✓ |
| A39.84 | Postmeningococcal arthritis | ✓ |
| A39.84 | Postmeningococcal arthritis | ✓ |
| A39.89 | Other meningococcal infections | ✓ |
| A39.89 | Other meningococcal infections | ✓ |
Frequently asked questions
What is ICD-10-CM code A39?
A39 is an ICD-10-CM category covering Meningococcal infection. It contains 34 more specific diagnosis codes, 30 of which are billable.
Is A39 a billable code?
No — A39 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A39.0 — Meningococcal meningitis). 30 of the 34 codes under A39 are billable.
What codes fall under A39?
A39 includes A39.0, A39.0, A39.1, A39.1, A39.2, plus 29 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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