L85.9 Epidermal thickening, unspecified

Billable ICD-10-CM code, FY2026.

Applies from L85 Other epidermal thickening

Excludes2 (not included here)

• hypertrophic disorders of the skin (L91.-)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 701.9 Unspecified hypertrophic and atrophic conditions of skin (approximate)

Code annotations containing back-references to L85.9

Back-references to L85.9

• Type 1 Excludes: R23.4 Changes in skin texture ("epidermal thickening NOS (L85.9)")

Diagnosis Index entries for L85.9

• Hyperkeratosis
• Hyperplasia, hyperplastic › epithelial
• Hyperplasia, hyperplastic › epithelial › skin
• Pachyderma, pachydermia
• Thickening › epidermal

Nearby codes

• L85.0 Acquired ichthyosis
• L85.1 Acquired keratosis [keratoderma] palmaris et plantaris
• L85.2 Keratosis punctata (palmaris et plantaris)
• L85.3 Xerosis cutis
• L85.8 Other specified epidermal thickening
• L85.9 Epidermal thickening, unspecified (this code)