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 2026, 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.
Loose Anagen Hair Syndrome
Benign childhood alopecia that improves spontaneously with aging. It is characterized by anagen hairs (misshapen hair bulbs and absent inner and outer root sheaths), thin, and sparse hairs that pulls out easily.
About the Q84 Code Range
ICD-10 code Q84 covers various rare congenital malformations of the skin, hair, and nails. These codes specify distinct inherited or developmental defects affecting the integumentary system, including alopecia, nail abnormalities, and other skin-related malformations present from birth.
The category includes Q84.0 for congenital alopecia, which encompasses conditions such as congenital localized or generalized alopecia and related syndromes like Marie Unna syndrome and ichthyosis-associated alopecia. Q84.1 and Q84.2 describe congenital hair disorders, including unique patterns like pili torti and woolly hair, as well as hypertrichosis and uncombable hair syndrome. Nail abnormalities are detailed under Q84.3 (anonychia), Q84.4 (congenital leukonychia), Q84.5 (enlarged or hypertrophic nails), and Q84.6 (other nail malformations), covering conditions such as pachyonychia congenita and various dystrophies. Q84.8Q84.9 is used when a congenital integument malformation is present but not specifically classified.
These ICD-10 codes provide precise classification for coding and tracking uncommon congenital integument defects, helping clinicians and coders identify and document detailed conditions like congenital alopecia, nail dystrophies, and hair shaft abnormalities accurately.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
