A06.4Amebic liver abscess

A06.4 is the ICD-10-CM diagnosis code for amebic liver abscess. It belongs to category A06 (amebiasis), block A00-A09 (intestinal infectious diseases) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within A06 (amebiasis), A06.4 is specifically for amebic liver abscess. Related codes cover acute amebic dysentery (A06.0), chronic intestinal amebiasis (A06.1), amebic nondysenteric colitis (A06.2), Ameboma of intestine (A06.3), amebic lung abscess (A06.5), amebic brain abscess (A06.6), cutaneous amebiasis (A06.7), amebic infection of other sites (A06.8) and 1 more.

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 441 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC, relative weight 1.8219), DRG 442 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC, relative weight 0.9602) and DRG 443 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC, relative weight 0.6885), in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 006.3 (amebic liver abscess).