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O89.9

O89.9Complication of anesthesia during the puerperium, unspecified

Billable / specific codeICD-10-CM

O89.9 is a billable, specific ICD-10-CM code for complication of anesthesia during the puerperium, unspecified. It is valid for submission on a claim.

Other codes that can never be billed with O89.9

These codes carry an Excludes1 note pointing at O89.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O89.9 alone.

  • T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
  • T88.2Shock due to anesthesia
  • T88.2XXAShock due to anesthesia, initial encounter
  • T88.2XXDShock due to anesthesia, subsequent encounter
  • T88.2XXSShock due to anesthesia, sequela

Risk adjustment

O89.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How O89.9 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to O89.9.

  • Effect, adverseanesthesiapostpartum, puerperal

Code history

O89.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share O89. If O89.9 is not quite right, the correct code is usually one of these.

Questions about O89.9

Is O89.9 a billable ICD-10-CM code?
Yes. O89.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O89.9 sit in the tabular list?
Pregnancy, childbirth and the puerperium (O00-O9A), in the block Complications predominantly related to the puerperium (O85-O92).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.