A69.2 vs L49
A69.2 (Lyme disease) compared with L49 (Exfoliation due to erythematous conditions according to extent of body surface involved), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. L49 carries an Excludes1 note covering A69.2: “Lyme disease (A69.2-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| A69.2Lyme disease | L49Exfoliation due to erythematous conditions according to extent of body surface involved | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) |
| Definition | Lyme disease is a non-billable ICD-10-CM category code (A69.2). | Exfoliation due to erythematous conditions according to extent of body surface involved is a non-billable ICD-10-CM category code (L49). |
| Includes | Erythema chronicum migrans due to Borrelia burgdorferi | — |
| Code first | — | erythematous condition causing exfoliation, such as: Ritter's disease (L00) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources