R53.8 vs T67
R53.8 (Other malaise and fatigue) compared with T67 (Effects of heat and light), 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. R53.8 carries an Excludes1 note covering T67: “exhaustion and fatigue due to heat (T67.-)”
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
| R53.8Other malaise and fatigue | T67Effects of heat and light | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T67.01XA, T67.01XD, T67.01XS, T67.02XA, T67.02XD |
| Classification | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Other malaise and fatigue is a non-billable ICD-10-CM category code (R53.8). | Effects of heat and light is a non-billable ICD-10-CM category code (T67). |
| 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