Is L51.3 a billable ICD-10-CM code?

Yes. L51.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L51.3 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 L51.3?

L51.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L51.3 (L51) and apply to it just the same.

L51.3

L51.3 — Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome

Billable / specific codeICD-10-CM

L51.3 is a billable, specific ICD-10-CM code for stevens-johnson syndrome-toxic epidermal necrolysis overlap syndrome. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

SJS-TEN overlap syndrome

Excludes1 inherited from the categories above L51.3

These are not written on L51.3, but they bind it: a note on a category applies to every code beneath it. Billing L51.3 with anything listed here is a denial.

Written on L51 — Erythema multiforme

staphylococcal scalded skin syndrome (L00)
Ritter's disease (L00)

Risk adjustment

L51.3 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

L51.3 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56786Billing and Coding: Immune Globulin
A57554Billing and Coding: Immune Globulins
A57778Billing and Coding: Immune Globulin

How L51.3 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 L51.3.

Stevens-Johnson disease or syndrome›toxic epidermal necrolysis overlap
Syndrome›Stevens-Johnson syndrome›toxic epidermal necrolysis overlap

Code history

L51.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share L51. If L51.3 is not quite right, the correct code is usually one of these.

Questions about L51.3

Is L51.3 a billable ICD-10-CM code?: Yes. L51.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L51.3 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 L51.3?: L51.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L51.3 (L51) and apply to it just the same.