T68 vs T88.51
T68 (Hypothermia) compared with T88.51 (Hypothermia following anesthesia), 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. T68 carries an Excludes1 note covering T88.51: “hypothermia following anesthesia (T88.51)”
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
| T68Hypothermia | T88.51Hypothermia following anesthesia | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Hypothermia is a non-billable ICD-10-CM category code (T68). | Hypothermia following anesthesia is a non-billable ICD-10-CM category code (T88.51). |
| 7th character | The appropriate 7th character is to be added to code T68 | The appropriate 7th character is to be added to each code from category T88 |
| Includes | Accidental hypothermia Hypothermia NOS | — |
| Use additional code | code to identify source of exposure: Exposure to excessive cold of man-made origin (W93) Exposure to excessive cold of natural origin (X31) | code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5) code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources