L49 ICD-10-CM Code: Exfoliation due to erythematous conditions according to extent of body surface involved
L49 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Diseases of the skin and subcutaneous tissue (L00-L99) / Urticaria and erythema (L49-L54)
L49
Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidanceExfoliation due to erythematous conditions according to extent of body surface involved
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for L49. Check the code and parent instructions in the Code Book.
Excludes 2
Official- certain conditions originating in the perinatal period (P04-P96)Inherited from L00-L99
- certain infectious and parasitic diseases (A00-B99)Inherited from L00-L99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from L00-L99
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from L00-L99
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from L00-L99
- lipomelanotic reticulosis (I89.8)Inherited from L00-L99
- neoplasms (C00-D49)Inherited from L00-L99
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from L00-L99
- systemic connective tissue disorders (M30-M36)Inherited from L00-L99
- viral warts (B07.-)Inherited from L00-L99
Related Codes
Includes
OfficialNo Includes notes are included in this display for L49. Check the code and parent instructions in the Code Book.
Excludes 1
Official- Lyme disease (A69.2-)Inherited from L49-L54
- rosacea (L71.-)Inherited from L49-L54
Code First
Official- 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)
Use Additional
OfficialNo Use Additional Code instructions are included in this display for L49. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for L49. Check the code and parent instructions in the Code Book.
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
- Code
- L49
- Description
- Exfoliation due to erythematous conditions according to extent of body surface involved
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- No
- Payment year
- 2026
Coder workflow notes
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What This Code Means
L49 is the ICD-10-CM diagnosis code for exfoliation due to erythematous conditions according to extent of body surface involved. L49 sits in the ICD-10-CM chapter for diseases of the skin and subcutaneous tissue (l00-l99), within the section covering urticaria and erythema (l49-l54).
Header codes like L49 cannot be reported on claims directly; they organize child codes that share clinical context. Coders should select the billable child code that matches the documented presentation and then verify its current source-backed HCC mapping. Do not infer a child code or risk adjustment value from the header alone.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for L49 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.