L66.4 Folliculitis ulerythematosa reticulata

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 701.8 Other specified hypertrophic and atrophic conditions of skin (approximate)

Diagnosis Index entries for L66.4

• Atrophoderma, atrophodermia (of) › reticulatum symmetricum faciei
• Atrophoderma, atrophodermia (of) › vermiculata (cheeks)
• Folliculitis (superficial) › ulerythematosa reticulata

Nearby codes

• L66.11 Classic lichen planopilaris
• L66.12 Frontal fibrosing alopecia
• L66.19 Other lichen planopilaris
• L66.2 Folliculitis decalvans
• L66.3 Perifolliculitis capitis abscedens
• L66.4 Folliculitis ulerythematosa reticulata (this code)
• L66.8 Other cicatricial alopecia
• L66.81 Central centrifugal cicatricial alopecia
• L66.89 Other cicatricial alopecia
• L66.9 Cicatricial alopecia, unspecified