L74 vs T67.6XXD
L74 (Eccrine sweat disorders) compared with T67.6XXD (Heat fatigue, transient, subsequent encounter), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. T67.6XXD carries an Excludes2 note covering L74: “sweat disorder due to heat (L74-L75)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| L74Eccrine sweat disorders | T67.6XXDHeat fatigue, transient, subsequent encounter | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Eccrine sweat disorders is a non-billable ICD-10-CM category code (L74). | Heat fatigue, transient, subsequent encounter is a billable ICD-10-CM diagnosis code (T67.6D). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T67 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources