Alphabetic Index FY2027

L49

Exfoliation due to erythematous conditions according to extent of body surface involved

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L49–L54 Urticaria and erythema

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

L49 is a non-billable ICD-10-CM code category for exfoliation due to erythematous conditions according to extent of body surface involved. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are L49.0 Exfoliation due to erythematous condition involving less than 10 percent of body surface, L49.1 Exfoliation due to erythematous condition involving 10-19 percent of body surface, L49.2 Exfoliation due to erythematous condition involving 20-29 percent of body surface, L49.3 Exfoliation due to erythematous condition involving 30-39 percent of body surface and 6 more. Its coding notes include a Code first instruction, 2 Excludes1 entries and 10 Excludes2 entries.

Code first

If the underlying condition listed here is present and known, sequence it first.

This code
  • erythematous condition causing exfoliation, such as:
    • Ritter's disease (L00)
    • (Staphylococcal) scalded skin syndrome (L00)
    • Stevens-Johnson syndrome (L51.1)
    • Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome (L51.3)
    • Toxic epidermal necrolysis (L51.2)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (2 notes)
Inherited from L49–L54 Urticaria and erythema

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

More specific codes under L49 10