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ICD-10/O33.6XX2

O33.6XX2 ICD-10-CM Code: Maternal care for disproportion due to hydrocephalic fetus, fetus 2

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 817 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH MCC (MDC 14)
  • MS-DRG 818 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH CC (MDC 14)
  • MS-DRG 819 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)
  • MS-DRG 831 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH MCC (MDC 14)
  • MS-DRG 832 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH CC (MDC 14)
  • MS-DRG 833 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Maternal care for disproportion due to hydrocephalic fetus, fetus 2 is a billable ICD-10-CM diagnosis code (O33.62).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for O33.6XX2 in the official ICD-10-CM tabular list.

Includes

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

  • the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • disproportion with obstructed labor (O65-O66)

Frequently Asked Questions (FAQ) & Clinical Guidance

Does O33.6XX2 require a 7th character?

Yes. One of the following 7th characters is to be assigned to code O33.6. 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 code O33.6 with a 7th character of 1 through 9..

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O33.6XX2 in its code family, with their registry titles.

  • O33.5XX5 — Maternal care for disproportion due to unusually large fetus, fetus 5
  • O33.5XX9 — Maternal care for disproportion due to unusually large fetus, other fetus
  • O33.6 — Maternal care for disproportion due to hydrocephalic fetus
  • O33.6XX0 — Maternal care for disproportion due to hydrocephalic fetus, not applicable or unspecified
  • O33.6XX1 — Maternal care for disproportion due to hydrocephalic fetus, fetus 1
  • O33.6XX3 — Maternal care for disproportion due to hydrocephalic fetus, fetus 3
  • O33.6XX4 — Maternal care for disproportion due to hydrocephalic fetus, fetus 4
  • O33.6XX5 — Maternal care for disproportion due to hydrocephalic fetus, fetus 5
  • O33.6XX9 — Maternal care for disproportion due to hydrocephalic fetus, other fetus
  • O33.7 — Maternal care for disproportion due to other fetal deformities

View all codes in the O33 family