Q84.1 Congenital morphological disturbances of hair, not elsewhere classified

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

Applicable to

• Beaded hair
• Monilethrix
• Pili annulati

Excludes1 (never code together)

• Menkes' kinky hair syndrome (E83.09)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 757.4 Specified anomalies of hair (approximate)

Code annotations containing back-references to Q84.1

Back-references to Q84.1

• Type 1 Excludes: L67 Hair color and hair shaft abnormalities ("monilethrix (Q84.1)")
• Type 1 Excludes: L67 Hair color and hair shaft abnormalities ("pili annulati (Q84.1)")

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 Q84.1

• Beaded hair (congenital)
• Monilethrix (congenital)
• Pili › annulati or torti (congenital)
• Ringed hair (congenital)
• Thrix annulata (congenital)
• Trichostasis spinulosa (congenital)
• Twist, twisted › hair (congenital)
• Woolly, wooly hair (congenital) (nevus)

Nearby codes

• Q84 Other congenital malformations of integument
• Q84.0 Congenital alopecia
• Q84.1 Congenital morphological disturbances of hair, not elsewhere classified (this code)
• 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