G71.13 vs Q77
G71.13 (Myotonic chondrodystrophy) compared with Q77 (Osteochondrodysplasia with defects of growth of tubular bones and spine), 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. Q77 carries an Excludes2 note covering G71.13: “congenital myotonic chondrodystrophy (G71.13)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G71.13Myotonic chondrodystrophy | Q77Osteochondrodysplasia with defects of growth of tubular bones and spine | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Myotonic chondrodystrophy is a billable ICD-10-CM diagnosis code (G71.13). | Osteochondrodysplasia with defects of growth of tubular bones and spine is a non-billable ICD-10-CM category code (Q77). |
| Includes | Chondrodystrophic myotonia Congenital myotonic chondrodystrophy Schwartz-Jampel disease | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources