K74.3Primary biliary cirrhosis

K74.3 is the ICD-10-CM diagnosis code for primary biliary cirrhosis. It belongs to category K74 (fibrosis and cirrhosis of liver), block K70-K77 (diseases of liver) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within K74 (fibrosis and cirrhosis of liver), K74.3 is specifically for primary biliary cirrhosis. Related codes cover hepatic fibrosis (K74.0), hepatic sclerosis (K74.1), hepatic fibrosis with hepatic sclerosis (K74.2), secondary biliary cirrhosis (K74.4), biliary cirrhosis, unspecified (K74.5) and other and unspecified cirrhosis of liver (K74.6).

The conditions in its Excludes2 note aren't part of K74.3, but may be coded alongside it if the patient has both: primary sclerosing cholangitis (K83.01).

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 432 (Cirrhosis and Alcoholic Hepatitis with MCC, relative weight 1.9828), DRG 433 (Cirrhosis and Alcoholic Hepatitis with CC, relative weight 1.0397) and DRG 434 (Cirrhosis and Alcoholic Hepatitis without CC/MCC, relative weight 0.6413), 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 571.6 (biliary cirrhosis).