O29 vs T88.53
O29 (Complications of anesthesia during pregnancy) compared with T88.53 (Unintended awareness under general anesthesia during procedure), 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. T88.53 carries an Excludes2 note covering O29: “complications of anesthesia in pregnancy (O29.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| O29Complications of anesthesia during pregnancy | T88.53Unintended awareness under general anesthesia during procedure | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Complications of anesthesia during pregnancy is a non-billable ICD-10-CM category code (O29). | Unintended awareness under general anesthesia during procedure is a non-billable ICD-10-CM category code (T88.53). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T88 |
| Includes | maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy | — |
| Use additional code | code, if necessary, to identify the complication | 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