Is L93 a billable ICD-10-CM code?

No. L93 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does L93 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).

What cannot be coded together with L93?

L93 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

L93

L93 — Lupus erythematosus

Non-billable headerICD-10-CM

L93 is a non-billable header ICD-10-CM code for lupus erythematosus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

lupus exedens (A18.4)
lupus vulgaris (A18.4)
scleroderma (M34.-)
systemic lupus erythematosus (M32.-)

Use additional code

Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Other codes that can never be billed with L93

These codes carry an Excludes1 note pointing at L93. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L93 alone.

L95Vasculitis limited to skin, not elsewhere classified
M32Systemic lupus erythematosus (SLE)
M35.6Relapsing panniculitis [Weber-Christian]
M54.0Panniculitis affecting regions of neck and back
M79.3Panniculitis, unspecified

Risk adjustment

L93 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.

Code to one of these instead L93

3 child codes. Green means billable.

Questions about L93

Is L93 a billable ICD-10-CM code?: No. L93 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does L93 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).
What cannot be coded together with L93?: L93 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.