ICD-10 code for interstitial chronic pancreatitis

The ICD-10-CM code for interstitial chronic pancreatitis is K86.1 (Other chronic pancreatitis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K86.1.

Within K86, choose K86.1 (Other chronic pancreatitis) only when documentation doesn't support a more specific option: alcohol-induced chronic pancreatitis (K86.0), cyst of pancreas (K86.2), pseudocyst of pancreas (K86.3), other specified diseases of pancreas (K86.8) and disease of pancreas, unspecified (K86.9).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 438 (Disorders of Pancreas Except Malignancy with MCC, relative weight 1.5765), DRG 439 (Disorders of Pancreas Except Malignancy with CC, relative weight 0.8402) and DRG 440 (Disorders of Pancreas Except Malignancy without CC/MCC, relative weight 0.5965), 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.