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O41.93X1 ICD-10-CM Code: Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 1

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, 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.

Official Registry Overview & Definition

Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 1 is a billable ICD-10-CM diagnosis code (O41.931).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for O41.93X1 in the official ICD-10-CM tabular list.

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).

Frequently Compared Codes

The official Excludes notes on O41.93X1 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

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

Verify Before Coding

  • Age-restricted: the Medicare Code Editor lists this as a maternity (age 9-64) diagnosis; other ages are presumed incorrect.

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

Relationships & Classification

Other codes that name O41.93X1 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

1 Excludes1 notes: Z03.7 (via O41.-).

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 6 MS-DRGs: DRG 817 (MDC 14), DRG 818 (MDC 14), DRG 819 (MDC 14), DRG 831 (MDC 14), DRG 832 (MDC 14), DRG 833 (MDC 14).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):PRG014 — Polyhydramnios and other problems of amniotic cavity (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Polyhydramnios and other problems of amniotic cavity).

O41.91X0 — Disorder of amniotic fluid and membranes, unspecified, first trimester, not applicable or unspecified, O41.91X1 — Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 1, O41.91X2 — Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 2, O41.91X3 — Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 3, O41.91X4 — Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 4, O41.91X5 — Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 5, O41.91X9 — Disorder of amniotic fluid and membranes, unspecified, first trimester, other fetus, O41.92X0 — Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified, O41.92X1 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 1, O41.92X2 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 2, O41.92X3 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3, O41.92X4 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4, O41.92X5 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5, O41.92X9 — Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus, O41.93X0 — Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified, O41.93X2 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 2, O41.93X3 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 3, O41.93X4 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 4, O41.93X5 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 5, O41.93X9 — Disorder of amniotic fluid and membranes, unspecified, third trimester, other fetus, +91 more

Contextual Map

Every relationship of O41.93X1 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]
  • O41 — Clinical Diagnosis [Hierarchy]
  • O41.9 — Clinical Diagnosis [Hierarchy]
  • O41.93 — Clinical Diagnosis [Hierarchy]
  • O41.93X — Clinical Diagnosis [Hierarchy]

Referenced by Excludes1 notes

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

Clinical classification (CCSR)

  • PRG014 — Polyhydramnios and other problems of amniotic cavity [CCSR]

Potential MS-DRG

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

MDC crossing · procedures (94)

  • MDC 14 — Pregnancy, Childbirth and the Puerperium [MDC crossing]: “Pregnancy, Childbirth and the Puerperium — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 0U570ZZ — Destruction of Bilateral Fallopian Tubes, Open Approach [Same-MDC procedure]: “Destruction of Bilateral Fallopian Tubes, Open Approach — grouped in MDC 14, the procedure side of this code's crossing.” · check together
  • 0U573ZZ — Destruction of Bilateral Fallopian Tubes, Percutaneous Approach [Same-MDC procedure]: “Destruction of Bilateral Fallopian Tubes, Percutaneous Approach — grouped in MDC 14, the procedure side of this code's crossing.” · check together
  • 0U574ZZ — Destruction of Bilateral Fallopian Tubes, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Destruction of Bilateral Fallopian Tubes, Percutaneous Endoscopic Approach — grouped in MDC 14, the procedure side of this code's crossing.” · check together
  • 0U577ZZ — Destruction of Bilateral Fallopian Tubes, Via Natural or Artificial Opening [Same-MDC procedure]: “Destruction of Bilateral Fallopian Tubes, Via Natural or Artificial Opening — grouped in MDC 14, the procedure side of this code's crossing.” · check together
  • 0U578ZZ — Destruction of Bilateral Fallopian Tubes, Via Natural or Artificial Opening Endoscopic [Same-MDC procedure]: “Destruction of Bilateral Fallopian Tubes, Via Natural or Artificial Opening Endoscopic — grouped in MDC 14, the procedure side of this code's crossing.” · check together
  • and 89 more

Nearest codes (40)

  • O41 — Other disorders of amniotic fluid and membranes [Sibling]
  • O41.8X9 — Other specified disorders of amniotic fluid and membranes, unspecified trimester [Sibling]
  • O41.8X90 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, not applicable or unspecified [Sibling]
  • O41.8X91 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 1 [Sibling]
  • O41.8X92 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 2 [Sibling]
  • O41.8X93 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 3 [Sibling]
  • O41.8X94 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 4 [Sibling]
  • O41.8X95 — Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 5 [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does O41.93X1 require a 7th character?

Yes. One of the following 7th characters is to be assigned to each code under category O41. 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 O41 that has a 7th character of 1 through 9..

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O41.93X1 in its code family, with their registry titles.

  • O41.92X3 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3
  • O41.92X4 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4
  • O41.92X5 — Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5
  • O41.92X9 — Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus
  • O41.93 — Disorder of amniotic fluid and membranes, unspecified, third trimester
  • O41.93X0 — Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified
  • O41.93X2 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 2
  • O41.93X3 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 3
  • O41.93X4 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 4
  • O41.93X5 — Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 5

View all codes in the O41 family