MCMCB Pro
O33.6XX5

O33.6XX5Maternal care for disproportion due to hydrocephalic fetus, fetus 5

Billable / specific codeICD-10-CM

O33.6XX5 is a billable, specific ICD-10-CM code for maternal care for disproportion due to hydrocephalic fetus, fetus 5. It is valid for submission on a claim.

7th character "5" — fetus 5

One of the following 7th characters is to be assigned to code O33.6. 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 O33.6 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

O33.6XX5 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.

Related codes at this level

Codes that share O33.6. If O33.6XX5 is not quite right, the correct code is usually one of these.

Questions about O33.6XX5

Is O33.6XX5 a billable ICD-10-CM code?
Yes. O33.6XX5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O33.6XX5 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).
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.