K11.4 vs Q38.4
K11.4 (Fistula of salivary gland) compared with Q38.4 (Congenital malformations of salivary glands and ducts), 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. K11.4 carries an Excludes1 note covering Q38.4: “congenital fistula of salivary gland (Q38.4)”
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
| K11.4Fistula of salivary gland | Q38.4Congenital malformations of salivary glands and ducts | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Fistula of salivary gland is a billable ICD-10-CM diagnosis code (K11.4). | Congenital malformations of salivary glands and ducts is a billable ICD-10-CM diagnosis code (Q38.4). |
| Includes | — | Atresia of salivary glands and ducts Congenital absence of salivary glands and ducts Congenital accessory salivary glands and ducts Congenital fistula of salivary gland |
| Use additional code | code to identify: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources