L49.9 Exfoliation due to erythematous condition involving 90 or more percent of body surface

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from L49 Exfoliation due to erythematous conditions according to extent of body surface involved

Code first

• 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)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 695.59 Exfoliation due to erythematous condition involving 90 percent or more of body surface

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to L49.9

Back-references to L49

• Use Additional: L00 Staphylococcal scalded skin syndrome ("code to identify percentage of skin exfoliation (L49.-)")
• Use Additional: L51 Erythema multiforme ("code to identify percentage of skin exfoliation (L49.-)")

Diagnosis Index entries for L49.9

• Exfoliation › due to erythematous conditions according to extent of body surface involved › 90-99 percent of body surface

Nearby codes

• L49.4 Exfoliation due to erythematous condition involving 40-49 percent of body surface
• L49.5 Exfoliation due to erythematous condition involving 50-59 percent of body surface
• L49.6 Exfoliation due to erythematous condition involving 60-69 percent of body surface
• L49.7 Exfoliation due to erythematous condition involving 70-79 percent of body surface
• L49.8 Exfoliation due to erythematous condition involving 80-89 percent of body surface
• L49.9 Exfoliation due to erythematous condition involving 90 or more percent of body surface (this code)