ICD-10 L52
Billable / SpecificErythema nodosum
About ICD-10-CM L52
ICD-10-CM code L52 represents Erythema nodosum. This is a billable/specific code in the Skin and Subcutaneous Tissue chapter (block L52). The 2026 edition of ICD-10-CM L52 became effective on October 1, 2025.
Type 1 Excludes
Pure excludes, these codes can never be coded together with L52. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- tuberculous erythema nodosum (A18.4)
Medicare LCD Coverage for L52
Local Coverage Determinations (LCDs) from CMS MACs that list L52 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing L52.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but L52 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with L52
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert L52 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| L52 | 6952 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To L52
Other codes in section L49-L54 (Urticaria and erythema).
ICD-10 L52, Billing FAQ
Is ICD-10 code L52 billable? +
Yes, L52 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for L52? +
Type 1 Excludes (never code together with L52): tuberculous erythema nodosum (A18.4)
What ICD-9 codes does L52 map to? +
Per CMS GEMs, L52 maps to ICD-9 codes: 6952. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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