A39
A39 — Meningococcal infection
Non-billable headerICD-10-CM
A39 is a non-billable header ICD-10-CM code for meningococcal infection. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with A39
These codes carry an Excludes1 note pointing at A39. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A39 alone.
- E27.1Primary adrenocortical insufficiency
- E27.4Other and unspecified adrenocortical insufficiency
- E35Disorders of endocrine glands in diseases classified elsewhere
- G01Meningitis in bacterial diseases classified elsewhere
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
- I32Pericarditis in diseases classified elsewhere
- I39Endocarditis and heart valve disorders in diseases classified elsewhere
- I41Myocarditis in diseases classified elsewhere
Risk adjustment
A39 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
A39 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead A39
8 child codes. Green means billable.
Questions about A39
- Is A39 a billable ICD-10-CM code?
- No. A39 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does A39 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).