Is ICD-10-CM code O31 billable?

No, O31 (Complications specific to multiple gestation) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code O31 belong to?

O31 belongs to Chapter 15 of the ICD-10-CM tabular list: O00–O9A (Pregnancy, Childbirth and the Puerperium).

O31Non-billable

Complications specific to multiple gestation

Pregnancy, Childbirth and the Puerperium·Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)·category·FY 2026

Use a more specific code (0 billable, 5 non-billable)

O31.0Papyraceous fetushas subcodes O31.1Continuing pregnancy after spontaneous abortion of one fetus or morehas subcodes O31.2Continuing pregnancy after intrauterine death of one fetus or morehas subcodes O31.3Continuing pregnancy after elective fetal reduction of one fetus or morehas subcodes O31.8Other complications specific to multiple gestationhas subcodes

CH15 Parent Instructions

Excludes1(Not coded here. Use a different code.)

supervision of normal pregnancy (Z34.-)

Excludes2(Not included here. Code separately if applicable.)

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

Use Additional Code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)

delayed delivery of second twin, triplet, etc. (O63.2)
malpresentation of one fetus or more (O32.9)
placental transfusion syndromes (O43.0-)

Clinical Hierarchy

BillableHas subcodes

CH15Pregnancy, childbirth and the puerperium (O00-O9A)

O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

O31Complications specific to multiple gestationNot billable

O31.0Papyraceous fetusSubcodes

O31.1Continuing pregnancy after spontaneous abortion of one fetus or moreSubcodes

O31.2Continuing pregnancy after intrauterine death of one fetus or moreSubcodes

O31.3Continuing pregnancy after elective fetal reduction of one fetus or moreSubcodes

O31.8Other complications specific to multiple gestationSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.