Does L91.9 require prior authorization?

No, L91.9 does not require prior authorization (high confidence). Code is covered without prior authorization.

`L91.9` — Hypertrophic disorder of the skin, unspecified

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

This policy provides billing, coding, and guideline information that complements the Local Coverage Determination (LCD) 'Cosmetic and Reconstructive Surgery' L33428; the full policy content is not included here, so specific documentation requirements (e.g., medical records, prior authorizations, forms) are not available in the provided excerpt.
Clinical records must clearly document medical necessity and an explicit rationale for why removal is not cosmetic when billing CPT 17106-17108.
Coding and billing guidance must be used with the associated Local Coverage Determination; coverage details for CPT 11055-11057 are delineated in the Medicare Internet-Only Manual and should be followed for claims.
Use the CPT code that best describes the procedure, location, and size of the lesion and ensure the diagnosis code matches the CPT procedure code.

Removal of benign skin lesions billed with CPT 17106, 17107, or 17108 is covered only when clinical records document medical necessity and explicitly state why the procedure is not cosmetic.
Treatment of hyperkeratotic lesions (e.g., corns and calluses) billed with CPT 11055, 11056, or 11057 is covered as described in the Medicare Internet-Only Manual.
Use CPT 11400-11446 when the excision is a full-thickness removal through the dermis including margins and including simple (non-layered) closure.
Use CPT 17110 for destruction of benign lesions other than skin tags or cutaneous vascular lesions for up to 14 lesions (report 1 unit).
Use CPT 17111 for destruction of benign lesions other than skin tags or cutaneous vascular lesions when 15 or more lesions are treated (report 1 unit).
Use CPT 11200 for removal of skin tags and report 1 unit of service.

A57482 — Billing and Coding: Removal of Benign Skin Lesions

J05

L35498 — Removal of Benign Skin Lesions

J05

A56658 — Billing and Coding: Cosmetic and Reconstructive Surgery

A57161 — Billing and Coding: Benign Skin Lesion Removal (Excludes Actinic Keratosis, and Mohs)

L34233 — Benign Skin Lesion Removal (Excludes Actinic Keratosis, and Mohs)

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