ICD-10-CM · Chapter 12 · L00-L99
L52 Erythema nodosum
Excludes 1 (cannot be coded together)
- tuberculous erythema nodosum (A18.4)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit L52 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026