K83 vs K91.5
K83 (Other diseases of biliary tract) compared with K91.5 (Postcholecystectomy syndrome), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. K83 carries an Excludes1 note covering K91.5: “postcholecystectomy syndrome (K91.5)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| K83Other diseases of biliary tract | K91.5Postcholecystectomy syndrome | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Other diseases of biliary tract is a non-billable ICD-10-CM category code (K83). | Postcholecystectomy syndrome is a billable ICD-10-CM diagnosis code (K91.5). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources