ICD-10-CM 2027
ICD-10 code for keratosis
From the official ICD-10-CM alphabetic index entry “Keratosis”. Page updated September 29, 2026.
About coding keratosis
The ICD-10-CM code for keratosis is L57.0 (Actinic keratosis). The official index lists 30 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L57.0.
Within L57 (skin changes due to chronic exposure to nonionizing radiation), L57.0 is specifically for actinic keratosis. Related codes cover actinic reticuloid (L57.1), cutis rhomboidalis nuchae (L57.2), Poikiloderma of Civatte (L57.3), cutis laxa senilis (L57.4), actinic granuloma (L57.5), other skin changes due to chronic exposure to nonionizing radiation (L57.8) and unspecified (L57.9).
Use an additional code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific keratosis codes (official index)
- actinic L57.0 — Actinic keratosis
- arsenical L85.8 — Other specified epidermal thickening
- congenital, specified NEC Q80.8 — Other congenital ichthyosis
- female genital NEC N94.89 — Other specified conditions associated with female genital organs and menstrual cycle
- follicularis Q82.8 — Other specified congenital malformations of skin
- acquired L11.0 — Acquired keratosis follicularis
- congenita Q82.8 — Other specified congenital malformations of skin
- et parafollicularis in cutem penetrans L87.0 — Keratosis follicularis et parafollicularis in cutem penetrans
- spinulosa (decalvans) Q82.8 — Other specified congenital malformations of skin
- vitamin A deficiency E50.8 — Other manifestations of vitamin A deficiency
- gonococcal A54.89 — Other gonococcal infections
- lichenoid L82.0 — Inflamed seborrheic keratosis
- male genital (external) N50.89 — Other specified disorders of the male genital organs
- nigricans L83 — Acanthosis nigricans
- obturans, external ear (canal)
- palmaris et plantaris (inherited) (symmetrical) Q82.8 — Other specified congenital malformations of skin
- acquired L85.1 — Acquired keratosis [keratoderma] palmaris et plantaris
- penile N48.89 — Other specified disorders of penis
- pharynx J39.2 — Other diseases of pharynx
- pilaris, acquired L85.8 — Other specified epidermal thickening
- punctata (palmaris et plantaris) L85.2 — Keratosis punctata (palmaris et plantaris)
- scrotal N50.89 — Other specified disorders of the male genital organs
- seborrheic L82.1 — Other seborrheic keratosis
- inflamed L82.0 — Inflamed seborrheic keratosis
- senile L57.0 — Actinic keratosis
- solar L57.0 — Actinic keratosis
- tonsillaris J35.8 — Other chronic diseases of tonsils and adenoids
- vagina N89.4 — Leukoplakia of vagina
- vegetans Q82.8 — Other specified congenital malformations of skin
- vitamin A deficiency E50.8 — Other manifestations of vitamin A deficiency
- vocal cord J38.3 — Other diseases of vocal cords
Common questions about keratosis ICD-10 codes
What is the ICD-10 code for keratosis?
- L57.0 — Actinic keratosis. More specific codes apply when the documentation supports them: L57.0, L85.8, Q80.8, N94.89 and others below.
What is the ICD-10 code for actinic keratosis?
- L57.0 — Actinic keratosis.
What is the ICD-10 code for arsenical keratosis?
- L85.8 — Other specified epidermal thickening.
What is the ICD-10 code for female genital nec keratosis?
- N94.89 — Other specified conditions associated with female genital organs and menstrual cycle.
What is the ICD-10 code for follicularis keratosis?
- Q82.8 — Other specified congenital malformations of skin.
What is the ICD-10 code for gonococcal keratosis?
- A54.89 — Other gonococcal infections.
What is the ICD-10 code for lichenoid keratosis?
- L82.0 — Inflamed seborrheic keratosis.
Is L57.0 billable?
- Yes. L57.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L57.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L57.0 as a principal diagnosis.
Is L57.0 a CC or MCC?
- No. L57.0 is neither a CC nor an MCC under MS-DRG v44.0.