Is B18 a billable ICD-10-CM code?

No. B18 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does B18 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Viral hepatitis (B15-B19).

B18

B18 — Chronic viral hepatitis

Non-billable headerICD-10-CM

B18 is a non-billable header ICD-10-CM code for chronic viral hepatitis. It cannot be billed on its own: choose one of the more specific child codes below.

Use additional code

Add a secondary code to capture the detail described below.

code, if applicable, for ascites (R18.8)

Includes

Conditions this code covers.

Carrier of viral hepatitis

Risk adjustment

B18 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 B18

5 child codes. Green means billable.

B18.0Chronic viral hepatitis B with delta-agent
B18.1Chronic viral hepatitis B without delta-agent
B18.2Chronic viral hepatitis C
B18.8Other chronic viral hepatitis
B18.9Chronic viral hepatitis, unspecified

Questions about B18

Is B18 a billable ICD-10-CM code?: No. B18 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does B18 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Viral hepatitis (B15-B19).