Is L56.3 a billable ICD-10-CM code?

Yes. L56.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L56.3 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Radiation-related disorders of the skin and subcutaneous tissue (L55-L59).

L56.3

L56.3 — Solar urticaria

Billable / specific codeICD-10-CM

L56.3 is a billable, specific ICD-10-CM code for solar urticaria. It is valid for submission on a claim.

Other codes that can never be billed with L56.3

These codes carry an Excludes1 note pointing at L56.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L56.3 alone.

L50Urticaria

Risk adjustment

L56.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

L56.3 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57181Billing and Coding: Allergy Testing
A60360Billing and Coding: Allergy Diagnostic Testing
A60363Billing and Coding: Allergy Diagnostic Testing
A60374Billing and Coding: Allergy Diagnostic Testing

How L56.3 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L56.3.

Urticaria›solar

Related codes at this level

Codes that share L56. If L56.3 is not quite right, the correct code is usually one of these.

Questions about L56.3

Is L56.3 a billable ICD-10-CM code?: Yes. L56.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L56.3 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Radiation-related disorders of the skin and subcutaneous tissue (L55-L59).