O89 vs T88.2
O89 and T88.2 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on T88.2
puerperium (O89.-)
O89
Complications of anesthesia during the puerperium
Not billable
- Chapter 15
- Pregnancy, childbirth and the puerperium
- Section
- O85-O92
Use when the record says
- maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during the puerperium
T88.2
Shock due to anesthesia
Not billable
- Chapter 19
- Injury, poisoning and certain other consequences of external causes
- Section
- T80-T88
Indexed under
- Anesthesia, anesthetic › shock
- Collapse › lung › pressure due to anesthesiaor other sedation
- Complication › anesthesia, anesthetic › shock (s) (from) (of)
- Shock › anesthetic › correct substance properly administered
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027