B16.0 ICD-10-CM Code: Acute hepatitis B with delta-agent with hepatic coma

B16.0 is the ICD-10-CM diagnosis code for acute hepatitis b with delta-agent with hepatic coma. This is a severe acute infection of the liver caused by both hepatitis B and delta viruses occurring together, where the patient has developed hepatic coma (a serious condition where liver failure causes loss of consciousness). This is a life-threatening condition requiring immediate medical intervention. B16.0 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral hepatitis (b15-b19).

B16.0 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

This code should only be used when both hepatitis B and delta-agent (hepatitis D) are confirmed present with documented hepatic coma; do not use if coma is absent.