Q84.5 Enlarged and hypertrophic nails

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

Applicable to

• Congenital onychauxis
• Pachyonychia

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 757.5 Specified anomalies of nails (approximate)

Code annotations containing back-references to Q84.5

Back-references to Q84

• Type 1 Excludes: P83 Other conditions of integument specific to newborn ("congenital malformations of skin and integument (Q80-Q84)")

Diagnosis Index entries for Q84.5

• Hypertrophy, hypertrophic › nail › congenital
• Onychauxis › congenital
• Pachyonychia (congenital)
• Thickening › nail › congenital

Nearby codes

• Q84.0 Congenital alopecia
• Q84.1 Congenital morphological disturbances of hair, not elsewhere classified
• Q84.2 Other congenital malformations of hair
• Q84.3 Anonychia
• Q84.4 Congenital leukonychia
• Q84.5 Enlarged and hypertrophic nails (this code)
• Q84.6 Other congenital malformations of nails
• Q84.8 Other specified congenital malformations of integument
• Q84.9 Congenital malformation of integument, unspecified