ICD-10 · PDGM grouping
Q30-Q34 — Congenital malformations of the respiratory system
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
31
No clinical group
4
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
27 of the 31 codes in Q30-Q34 group to MMTA - Other. A further 4 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in Q30-Q34
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in Q30-Q34
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| Q300 | Choanal atresia | A | Can lead a claim |
| Q301 | Agenesis and underdevelopment of nose | A | Can lead a claim |
| Q302 | Fissured, notched and cleft nose | A | Can lead a claim |
| Q303 | Congenital perforated nasal septum | A | Can lead a claim |
| Q308 | Other congenital malformations of nose | A | Can lead a claim |
| Q309 | Congenital malformation of nose, unspecified | None | Cannot lead a claim |
| Q310 | Web of larynx | A | Can lead a claim |
| Q311 | Congenital subglottic stenosis | A | Can lead a claim |
| Q312 | Laryngeal hypoplasia | A | Can lead a claim |
| Q313 | Laryngocele | A | Can lead a claim |
| Q315 | Congenital laryngomalacia | A | Can lead a claim |
| Q318 | Other congenital malformations of larynx | A | Can lead a claim |
| Q319 | Congenital malformation of larynx, unspecified | None | Cannot lead a claim |
| Q320 | Congenital tracheomalacia | A | Can lead a claim |
| Q321 | Other congenital malformations of trachea | A | Can lead a claim |
| Q322 | Congenital bronchomalacia | A | Can lead a claim |
| Q323 | Congenital stenosis of bronchus | A | Can lead a claim |
| Q324 | Other congenital malformations of bronchus | A | Can lead a claim |
| Q330 | Congenital cystic lung | A | Can lead a claim |
| Q331 | Accessory lobe of lung | A | Can lead a claim |
| Q332 | Sequestration of lung | A | Can lead a claim |
| Q333 | Agenesis of lung | A | Can lead a claim |
| Q334 | Congenital bronchiectasis | A | Can lead a claim |
| Q335 | Ectopic tissue in lung | A | Can lead a claim |
| Q336 | Congenital hypoplasia and dysplasia of lung | A | Can lead a claim |
| Q338 | Other congenital malformations of lung | A | Can lead a claim |
| Q339 | Congenital malformation of lung, unspecified | None | Cannot lead a claim |
| Q340 | Anomaly of pleura | A | Can lead a claim |
| Q341 | Congenital cyst of mediastinum | A | Can lead a claim |
| Q348 | Oth congenital malformations of respiratory system | A | Can lead a claim |
| Q349 | Congenital malformation of respiratory system, unspecified | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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