ICD-10-CM 2027
ICD-10 code for second degree sunburn
From the official ICD-10-CM alphabetic index entry “Sunburn › second degree”. Page updated September 29, 2026.
About coding second degree sunburn
The ICD-10-CM code for second degree sunburn is L55.1 (Sunburn of second degree).
Within L55 (Sunburn), L55.1 is specifically for Sunburn of second degree. Related codes cover of first degree (L55.0), of third degree (L55.2) and unspecified (L55.9).
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.
Common questions about second degree sunburn ICD-10 codes
What is the ICD-10 code for second degree sunburn?
- L55.1 — Sunburn of second degree.
Is L55.1 billable?
- Yes. L55.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L55.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L55.1 as a principal diagnosis.
Is L55.1 a CC or MCC?
- No. L55.1 is neither a CC nor an MCC under MS-DRG v44.0.