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ICD-10-CM Current in FY 2027

O40.9XX9

Polyhydramnios, unspecified trimester, other fetus

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where O40.9XX9 sits in the official hierarchy. Each level is the code it is classified under.

  1. O40 Polyhydramnios
  2. O40.9 Parent Polyhydramnios, unspecified trimester
  3. O40.9XX9 This code Polyhydramnios, unspecified trimester, other fetus

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Includes

hydramnios

Inherited from O40 — Polyhydramnios

Excludes1

encounter for suspected maternal and fetal conditions ruled out ( Z03.7- )

Inherited from O40 — Polyhydramnios

7th Character

One of the following 7th characters is to be assigned to each code under category O40. 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 a code from category O40 that has a 7th character of 1 through 9.

Inherited from O40 — Polyhydramnios

7th Character

0 - not applicable or unspecified

Inherited from O40 — Polyhydramnios

7th Character

1 - fetus 1

Inherited from O40 — Polyhydramnios

7th Character

2 - fetus 2

Inherited from O40 — Polyhydramnios

7th Character

3 - fetus 3

Inherited from O40 — Polyhydramnios

7th Character

4 - fetus 4

Inherited from O40 — Polyhydramnios

7th Character

5 - fetus 5

Inherited from O40 — Polyhydramnios

7th Character

9 - other fetus

Inherited from O40 — Polyhydramnios

Version History

How O40.9XX9 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Polyhydramnios, unspecified trimester, other fetus

  2. FY 2026 Effective

    Unchanged

    Polyhydramnios, unspecified trimester, other fetus

Related Codes

Other codes under O40.9

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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