ICD-10-CM 2027
ICD-10 code for skin cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › skin”. Page updated September 29, 2026.
About coding skin cyst
The ICD-10-CM code for skin cyst is L72.9 (Follicular cyst of the skin and subcutaneous tissue, unspecified). The official index lists 8 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L72.9.
Within L72, choose L72.9 (Follicular cyst of the skin and subcutaneous tissue, unspecified) only when documentation doesn't support a more specific option: epidermal cyst (L72.0), Pilar and trichodermal cyst (L72.1), Steatocystoma multiplex (L72.2), sebaceous cyst (L72.3) and other follicular cysts of the skin and subcutaneous tissue (L72.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific skin cyst codes (official index)
- breast
- epidermal, epidermoid L72.0 — Epidermal cyst
- epithelial L72.0 — Epidermal cyst
- eyelid
- genital organ NEC
- female N90.7 — Vulvar cyst
- male N50.89 — Other specified disorders of the male genital organs
- inclusion L72.0 — Epidermal cyst
- scrotum L72.9 — Follicular cyst of the skin and subcutaneous tissue, unspecified
- sebaceous L72.3 — Sebaceous cyst
- sweat gland or duct L74.8 — Other eccrine sweat disorders
Common questions about skin cyst ICD-10 codes
What is the ICD-10 code for skin cyst?
- L72.9 — Follicular cyst of the skin and subcutaneous tissue, unspecified. More specific codes apply when the documentation supports them: L72.0, L72.0, N90.7, N50.89 and others below.
What is the ICD-10 code for epithelial skin cyst?
- L72.0 — Epidermal cyst.
What is the ICD-10 code for inclusion skin cyst?
- L72.0 — Epidermal cyst.
What is the ICD-10 code for scrotum skin cyst?
- L72.9 — Follicular cyst of the skin and subcutaneous tissue, unspecified.
What is the ICD-10 code for sebaceous skin cyst?
- L72.3 — Sebaceous cyst.
What is the ICD-10 code for sweat gland or duct skin cyst?
- L74.8 — Other eccrine sweat disorders.
Is L72.9 billable?
- Yes. L72.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L72.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L72.9 as a principal diagnosis.
Is L72.9 a CC or MCC?
- No. L72.9 is neither a CC nor an MCC under MS-DRG v44.0.