Q40.0 vs R12
Q40.0 (Congenital hypertrophic pyloric stenosis) compared with R12 (Heartburn), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. R12 carries an Excludes2 note covering Q40.0: “congenital or infantile pylorospasm (Q40.0)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Q40.0Congenital hypertrophic pyloric stenosis | R12Heartburn | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Congenital hypertrophic pyloric stenosis is a billable ICD-10-CM diagnosis code (Q40.0). | Heartburn is a billable ICD-10-CM diagnosis code (R12). |
| Includes | Congenital constriction Congenital hypertrophy Congenital spasm Congenital stenosis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources