Other congenital malformations of integument (Q84) ICD-10-CM
The Q84 code range covers other congenital malformations of integument with 10 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the Q84 Range 10 codes · 9 billable
- Q84 Other congenital malformations of integumentNon-billable
- 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
- Q84.6 Other congenital malformations of nails
- Q84.8 Other specified congenital malformations of integument
- Q84.9 Congenital malformation of integument, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the Q84 range.
Congenital Alopecia
A congenital condition characterized by the absence of hair on the scalp or entire body. The lack of hair is rarely absolute and is usually accompanied by incompletely grown, lanugo-like hair. It affects males twice as much as females and a familial tendency is common.
Monilethrix
Rare autosomal dominant disorder of the hair shaft. The clinical features of the disease include HYPOTRICHOSIS, dry, and/or brittle hair, with varying degrees of ALOPECIA. Mutations in the hair-specific keratin genes KRTHB1, KRTHB3, or KRTHB6 are associated with monilethrix. Autosomal recessive monilethrix with limited HYPOTRICHOSIS are also known. Mutations in Dsg4, Liph, and P2ry5 protein genes are associated with the recessive form of monilethrix.
Pachyonychia
Thickened nails.
About the Q84 Code Range
These conditions are present at birth and affect hair, nails, or other parts of the body’s outer covering.
The hair codes distinguish hair loss (Q84.0), changes in hair form (Q84.1), and other hair malformations (Q84.2). Nail codes distinguish missing nails (Q84.3), white nails (Q84.4), enlarged or thickened nails (Q84.5), and other nail malformations (Q84.6).
Q84.8 covers other specified malformations of the outer covering; Q84.9 covers those left unspecified.
Questions About This Page
How many billable codes are in the Q84 range?
Of the 10 codes in this range, 9 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Q84 range classify?
The range classifies other congenital malformations of integument. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
