L74 vs T67.09XA
L74 (Eccrine sweat disorders) compared with T67.09XA (Other heatstroke and sunstroke, initial 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. T67.09XA 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 | T67.09XAOther heatstroke and sunstroke, initial 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). | Other heatstroke and sunstroke, initial encounter is a billable ICD-10-CM diagnosis code (T67.09A). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T67 |
| Use additional code | — | code(s) to identify any associated complications of heatstroke, such as: coma and stupor (R40.-) rhabdomyolysis (M62.82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources