O90.5 — Postpartum thyroiditis
O90.5 is a billable, specific ICD-10-CM code for postpartum thyroiditis. It is valid for submission on a claim.
Other codes that can never be billed with O90.5
These codes carry an Excludes1 note pointing at O90.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O90.5 alone.
- E06Thyroiditis
Risk adjustment
O90.5 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 O90.5 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 O90.5.
- Puerperal, puerperium›thyroiditis
- Thyroiditis›postpartum, puerperal
Related codes at this level
Codes that share O90. If O90.5 is not quite right, the correct code is usually one of these.
- O90.0Disruption of cesarean delivery wound
- O90.1Disruption of perineal obstetric wound
- O90.2Hematoma of obstetric wound
- O90.3Peripartum cardiomyopathy
- O90.4Postpartum acute kidney failure
- O90.6Postpartum mood disturbance
- O90.8Other complications of the puerperium, not elsewhere classified
- O90.9Complication of the puerperium, unspecified
Questions about O90.5
- Is O90.5 a billable ICD-10-CM code?
- Yes. O90.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does O90.5 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Complications predominantly related to the puerperium (O85-O92).