O29 vs O99
O29 (Complications of anesthesia during pregnancy) compared with O99 (Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium), 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. O29 carries an Excludes2 note covering O99: “maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| O29Complications of anesthesia during pregnancy | O99Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Complications of anesthesia during pregnancy is a non-billable ICD-10-CM category code (O29). | Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium is a non-billable ICD-10-CM category code (O99). |
| Includes | maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy | conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care |
| Use additional code | code, if necessary, to identify the complication | code to identify specific condition |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources