O33.4 — Maternal care for disproportion of mixed maternal and fetal origin
O33.4 is a non-billable header ICD-10-CM code for maternal care for disproportion of mixed maternal and fetal origin. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
One of the following 7th characters is to be assigned to code O33.4. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning code O33.4 with a 7th character of 1 through 9.
- 0
- not applicable or unspecified
- 1
- fetus 1
- 2
- fetus 2
- 3
- fetus 3
- 4
- fetus 4
- 5
- fetus 5
- 9
- other fetus
Risk adjustment
O33.4 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 O33.4 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 O33.4.
- Pregnancy›complicated by›disproportion›mixed maternal and fetal origin
Code to one of these instead O33.4
7 child codes. Green means billable.
- O33.4XX0Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecified
- O33.4XX1Maternal care for disproportion of mixed maternal and fetal origin, fetus 1
- O33.4XX2Maternal care for disproportion of mixed maternal and fetal origin, fetus 2
- O33.4XX3Maternal care for disproportion of mixed maternal and fetal origin, fetus 3
- O33.4XX4Maternal care for disproportion of mixed maternal and fetal origin, fetus 4
- O33.4XX5Maternal care for disproportion of mixed maternal and fetal origin, fetus 5
- O33.4XX9Maternal care for disproportion of mixed maternal and fetal origin, other fetus
Related codes at this level
Codes that share O33. If O33.4 is not quite right, the correct code is usually one of these.
- O33.0Maternal care for disproportion due to deformity of maternal pelvic bones
- O33.1Maternal care for disproportion due to generally contracted pelvis
- O33.2Maternal care for disproportion due to inlet contraction of pelvis
- O33.3Maternal care for disproportion due to outlet contraction of pelvis
- O33.5Maternal care for disproportion due to unusually large fetus
- O33.6Maternal care for disproportion due to hydrocephalic fetus
- O33.7Maternal care for disproportion due to other fetal deformities
- O33.8Maternal care for disproportion of other origin
- O33.9Maternal care for disproportion, unspecified
Questions about O33.4
- Is O33.4 a billable ICD-10-CM code?
- No. O33.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does O33.4 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48).