Is O66.3 a billable ICD-10-CM code?

Yes. O66.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does O66.3 sit in the tabular list?

Pregnancy, childbirth and the puerperium (O00-O9A), in the block Complications of labor and delivery (O60-O77).

O66.3

O66.3 — Obstructed labor due to other abnormalities of fetus

Billable / specific codeICD-10-CM

O66.3 is a billable, specific ICD-10-CM code for obstructed labor due to other abnormalities of fetus. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

code to identify cause of obstruction

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Dystocia due to fetal ascites
Dystocia due to fetal hydrops
Dystocia due to fetal meningomyelocele
Dystocia due to fetal sacral teratoma
Dystocia due to fetal tumor
Dystocia due to hydrocephalic fetus

Other codes that can never be billed with O66.3

These codes carry an Excludes1 note pointing at O66.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O66.3 alone.

O33.7Maternal care for disproportion due to other fetal deformities
O33.7XX0Maternal care for disproportion due to other fetal deformities, not applicable or unspecified
O33.7XX1Maternal care for disproportion due to other fetal deformities, fetus 1
O33.7XX2Maternal care for disproportion due to other fetal deformities, fetus 2
O33.7XX3Maternal care for disproportion due to other fetal deformities, fetus 3
O33.7XX4Maternal care for disproportion due to other fetal deformities, fetus 4
O33.7XX5Maternal care for disproportion due to other fetal deformities, fetus 5
O33.7XX9Maternal care for disproportion due to other fetal deformities, other fetus

Risk adjustment

O66.3 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 O66.3 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 O66.3.

Hydrops›causing obstructed labor(mother)
Deformity›fetal›causing obstructed labor
Dystocia›fetal›abnormality NEC
Dystocia›fetal›conjoined twins
Hydrocephalus›causing disproportion›with obstructed labor
Delivery›complicated›by›fetal›deformity
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›conjoined twins
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›hydrocephalic fetus
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›fetal›abnormality NEC
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›fetal›ascites
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›fetal›hydrops
Delivery›complicated›by›obstructed labor›due to›dystocia›due to›fetal›meningomyelocele

Related codes at this level

Codes that share O66. If O66.3 is not quite right, the correct code is usually one of these.

Questions about O66.3

Is O66.3 a billable ICD-10-CM code?: Yes. O66.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O66.3 sit in the tabular list?: Pregnancy, childbirth and the puerperium (O00-O9A), in the block Complications of labor and delivery (O60-O77).