Q84.6
Other congenital malformations of nails
Billable code
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
This code · Q84.6
Synonyms
Congenital clubnail Congenital koilonychia Congenital malformation of nail NOS
Inherited from chapter 17Congenital malformations, deformations and chromosomal abnormalities
Excludes 2
inborn errors of metabolism (E70-E88)
Note
Codes from this chapter are not for use on maternal records
Official Guidelines for Q84.6
FY 2026 ›Sections that reference Q84.6
Sections whose FY 2026 text names Q84.6, its Q84 category, or a range containing it — the chapter guidance above is the authoritative source.
Find Q84.6 in the alphabetic index
25 index paths lead to this code
- Eponychia
- Platyonychia
- Polyunguia
- Anomaly, anomalous › nail
- Clubnail › congenital
- Displacement, displaced › nail
- Egg shell nails › congenital
- Hypoplasia, hypoplastic › nail
- Koilonychia › congenital
- Longitudinal stripes or grooves, nails › congenital
- Malformation › nail
- Onychodystrophy › congenital
- Onychorrhexis › congenital
- Persistence, persistent › nail, anomalous
- Spading nail › congenital
- Spoon nail › congenital
- Atrophia › unguium › congenita
- Brittle › nails › congenital
- Deformity › nail › congenital
- Dystrophy, dystrophia › nail › congenital
- Dystrophy, dystrophia › unguium › congenital
- Fragilitas › unguium › congenital
- Furrowed › nail › congenital
- Horn › nail › congenital
- Malposition › congenital › nail