K85.1

Biliary acute pancreatitis

Header / non-billable

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This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · K85.1

Synonyms

Gallstone pancreatitis

Inherited from K85Acute pancreatitis

Includes

acute (recurrent) pancreatitis subacute pancreatitis

Inherited from chapter 11Diseases of the digestive system

Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for K85.1

FY 2026 ›

I.C.11Chapter-specific guidanceChapter 11: Diseases of the Digestive System (K00-K95)

Sections that reference K85.1

I.C.5.b.4)Medical Conditions Due to Psychoactive Substance Use, Abuse and DependenceChapter 5
… For example, for alcoholic pancreatitis due to alcohol dependence, assign the appropriate code from subcategory K85.2, Alcohol induced acute pancreatitis, and the appropriate code from subcategory F10.2, such as code F10.20, Alcohol dependence, …

Sections whose FY 2026 text names K85.1, its K85 category, or a range containing it — the chapter guidance above is the authoritative source.