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ICD-10-CM tabular list

L10-L14Bullous disorders

ICD-10-CM codes L10-L14 cover bullous disorders, within diseases of the skin and subcutaneous tissue. The block holds 32 codes across 5 categories, of which 26 are billable and 6 are header codes that cannot be submitted on a claim.

Excludes1 — never code together

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

  • benign familial pemphigus [Hailey-Hailey] (Q82.8)
  • staphylococcal scalded skin syndrome (L00)
  • toxic epidermal necrolysis [Lyell] (L51.2)

Risk adjustment in L10-L14

0 codes in this block map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded. Under-coding here is money left on the table; over-coding here is what audits are for.

  • HCC 387 Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders

What else to watch in L10-L14

  • 26 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.

Categories in L10-L14

ICD-10-CMFY2026-Apr· effective April 1, 2026