Skip to main content
ICD-10/O36.2

O36.2 ICD-10-CM Code: Maternal care for hydrops fetalis

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Maternal care for hydrops fetalis is a non-billable ICD-10-CM category code (O36.2). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for O36.2 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Maternal care for hydrops fetalis NOS
  • Maternal care for hydrops fetalis not associated with isoimmunization

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • Not billable as written — a more specific code is required: O36.20X0, O36.20X1, O36.20X2, O36.20X3, O36.20X4.
  • Requires a 7th character. "One of the following 7th characters is to be assigned to each code under category O36. 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 O36 that has a 7th character of 1 through 9." Options: O36.20X0, O36.20X1, O36.20X2, O36.20X3, O36.20X4, O36.20X5

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of O36.2 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • O00-O9A — Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A) (O00-O9A) [Hierarchy]
  • O30-O48 — Maternal care related to the fetus and amniotic cavity and possible delivery problems [Hierarchy]
  • O36 — Clinical Diagnosis [Hierarchy]

Excludes1

  • O36.0 — Maternal care for rhesus isoimmunization [Excludes1]: “hydrops fetalis associated with rhesus isoimmunization (O36.0-)” · check together
  • O36.1 — Maternal care for other isoimmunization [Excludes1]: “hydrops fetalis associated with ABO isoimmunization (O36.1-)” · check together

Referenced by Excludes1 notes

  • Z03.7 — Encounter for suspected maternal and fetal conditions ruled out [Excludes1](via O36.-): “known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)” · check together

Nearest codes (40)

  • O36 — Maternal care for other fetal problems [Sibling]
  • O36.1923 — Maternal care for other isoimmunization, second trimester, fetus 3 [Sibling]
  • O36.1924 — Maternal care for other isoimmunization, second trimester, fetus 4 [Sibling]
  • O36.1925 — Maternal care for other isoimmunization, second trimester, fetus 5 [Sibling]
  • O36.1929 — Maternal care for other isoimmunization, second trimester, other fetus [Sibling]
  • O36.193 — Maternal care for other isoimmunization, third trimester [Sibling]
  • O36.1930 — Maternal care for other isoimmunization, third trimester, not applicable or unspecified [Sibling]
  • O36.1931 — Maternal care for other isoimmunization, third trimester, fetus 1 [Sibling]
  • and 32 more

Referenced by Other Codes

Official ICD-10-CM tabular notes on other codes that name O36.2 or its code family.

1 Excludes1 notes: Z03.7 (via O36.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Can O36.2 be billed directly?

No. O36.2 (Maternal care for hydrops fetalis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does O36.2 require a 7th character?

Yes. One of the following 7th characters is to be assigned to each code under category O36. 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 O36 that has a 7th character of 1 through 9..

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O36.2 in its code family, with their registry titles.

  • O36.1992 — Maternal care for other isoimmunization, unspecified trimester, fetus 2
  • O36.1993 — Maternal care for other isoimmunization, unspecified trimester, fetus 3
  • O36.1994 — Maternal care for other isoimmunization, unspecified trimester, fetus 4
  • O36.1995 — Maternal care for other isoimmunization, unspecified trimester, fetus 5
  • O36.1999 — Maternal care for other isoimmunization, unspecified trimester, other fetus
  • O36.20 — Maternal care for hydrops fetalis, unspecified trimester
  • O36.20X0 — Maternal care for hydrops fetalis, unspecified trimester, not applicable or unspecified
  • O36.20X1 — Maternal care for hydrops fetalis, unspecified trimester, fetus 1
  • O36.20X2 — Maternal care for hydrops fetalis, unspecified trimester, fetus 2
  • O36.20X3 — Maternal care for hydrops fetalis, unspecified trimester, fetus 3

View all codes in the O36 family