All ICD10 Codes

O40

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Polyhydramnios

Use a more specific code (4 billable)
O40.1Polyhydramnios, first trimesterO40.2Polyhydramnios, second trimesterO40.3Polyhydramnios, third trimesterO40.9Polyhydramnios, unspecified trimester
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

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

Includes
  • hydramnios
Excludes1(Not coded here. Use a different code.)
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

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)
O40PolyhydramniosNot billable
O40.1Polyhydramnios, first trimesterBillable
O40.2Polyhydramnios, second trimesterBillable
O40.3Polyhydramnios, third trimesterBillable
O40.9Polyhydramnios, unspecified trimesterBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O40:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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