Q30.1 Agenesis and underdevelopment of nose

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Congenital absent of nose

Applies from Q30 Congenital malformations of nose

Excludes1 (never code together)

• congenital deviation of nasal septum (Q67.4)

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 748.1 Other anomalies of nose (approximate)

Code annotations containing back-references to Q30.1

Back-references to Q30

• Code Also: P28 Other respiratory conditions originating in the perinatal period (", if applicable, congenital malformations of the respiratory system (Q30-Q34)")

Diagnosis Index entries for Q30.1

• Absence (of) (organ or part) (complete or partial) › nose (congenital)
• Agenesis › nose
• Hypoplasia, hypoplastic › nose, nasal
• Underdevelopment › nose

Nearby codes

• Q30 Congenital malformations of nose
• Q30.0 Choanal atresia
• Q30.1 Agenesis and underdevelopment of nose (this code)
• Q30.2 Fissured, notched and cleft nose
• Q30.3 Congenital perforated nasal septum
• Q30.8 Other congenital malformations of nose
• Q30.9 Congenital malformation of nose, unspecified