O99.891 — Other specified diseases and conditions complicating pregnancy
O99.891 is a billable, specific ICD-10-CM code for other specified diseases and conditions complicating pregnancy. It is valid for submission on a claim.
Risk adjustment
O99.891 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.
Medicare coverage
O99.891 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56686Billing and Coding: HbA1c
How O99.891 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 O99.891.
- Pregnancy›complicated by›connective system disorders(conditions in M00-M99)
- Pregnancy›complicated by›musculoskeletal condition(conditions is M00-M99)
- Pregnancy›complicated by›pelvic inflammatory disease
- Pregnancy›complicated by›peritoneal adhesions(pelvic)
- Pregnancy›complicated by›diseases of›specified NEC
- Pregnancy›complicated by›disorders of›ear and mastoid process(conditions in H60-H95)
- Pregnancy›complicated by›disorders of›eye and adnexa(conditions in H00-H59)
- Pregnancy›complicated by›disorders of›specified NEC
Related codes at this level
Codes that share O99.89. If O99.891 is not quite right, the correct code is usually one of these.
Questions about O99.891
- Is O99.891 a billable ICD-10-CM code?
- Yes. O99.891 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does O99.891 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other obstetric conditions, not elsewhere classified (O94-O9A).