Is A64 a billable ICD-10-CM code?

Yes. A64 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does A64 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).

A64

A64 — Unspecified sexually transmitted disease

Billable / specific codeICD-10-CM

A64 is a billable, specific ICD-10-CM code for unspecified sexually transmitted disease. It is valid for submission on a claim.

Risk adjustment

A64 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.

How A64 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A64.

Disease, diseased›sexually transmitted
Disease, diseased›venereal
Venereal›disease

Questions about A64

Is A64 a billable ICD-10-CM code?: Yes. A64 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does A64 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).