A36
A36 — Diphtheria
Non-billable headerICD-10-CM
A36 is a non-billable header ICD-10-CM code for diphtheria. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with A36
These codes carry an Excludes1 note pointing at A36. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A36 alone.
- N16Renal tubulo-interstitial disorders in diseases classified elsewhere
- N33Bladder disorders in diseases classified elsewhere
- G63Polyneuropathy in diseases classified elsewhere
- H20.0Acute and subacute iridocyclitis
- I41Myocarditis in diseases classified elsewhere
- I43Cardiomyopathy in diseases classified elsewhere
- J03.8Acute tonsillitis due to other specified organisms
- K65Peritonitis
Risk adjustment
A36 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 to one of these instead A36
6 child codes. Green means billable.
Questions about A36
- Is A36 a billable ICD-10-CM code?
- No. A36 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does A36 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).