Is L52 a billable ICD-10-CM code?

Yes. L52 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L52 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Urticaria and erythema (L49-L54).

What cannot be coded together with L52?

L52 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

L52

L52 — Erythema nodosum

Billable / specific codeICD-10-CM

L52 is a billable, specific ICD-10-CM code for erythema nodosum. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

tuberculous erythema nodosum (A18.4)

Risk adjustment

L52 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.

How L52 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 L52.

Dermatitis›contusiformis
Erythema, erythematous›induratum(nontuberculous)
Erythema, erythematous›nodosum
Arthritis, arthritic›due to or associated with›erythema›nodosum
Arthritis, arthritic›in›erythema›nodosum
Arthropathy›in›erythema›nodosum

Questions about L52

Is L52 a billable ICD-10-CM code?: Yes. L52 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L52 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Urticaria and erythema (L49-L54).
What cannot be coded together with L52?: L52 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.