ICD-10 code for autoimmune hepatitis

The ICD-10-CM code for autoimmune hepatitis is K75.4 (Autoimmune hepatitis).

Within K75 (other inflammatory liver diseases), K75.4 is specifically for autoimmune hepatitis. Related codes cover abscess of liver (K75.0), phlebitis of portal vein (K75.1), nonspecific reactive hepatitis (K75.2), granulomatous hepatitis, not elsewhere classified (K75.3), other specified inflammatory liver diseases (K75.8) and inflammatory liver disease, unspecified (K75.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

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.