G47.35 vs Q34
G47.35 (Congenital central alveolar hypoventilation syndrome) compared with Q34 (Other congenital malformations of respiratory system), 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. Q34 carries an Excludes2 note covering G47.35: “congenital central alveolar hypoventilation syndrome (G47.35)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G47.35Congenital central alveolar hypoventilation syndrome | Q34Other congenital malformations of respiratory system | |
|---|---|---|
| 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 | Congenital central alveolar hypoventilation syndrome is a billable ICD-10-CM diagnosis code (G47.35). | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources