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ICD-10-CM 2027 diagnosis code

O30.201Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester

✓ Billable / specificCC — complication/comorbidityMaternity · age 9–64Female only

O30.201 is a valid, billable ICD-10-CM code for quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Quad preg, unsp num plcnta & amnio sacs, first trimester

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O30.201

O30.201 is the ICD-10-CM diagnosis code for Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester. It belongs to category O30 (multiple gestation), block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) and chapter 15 (pregnancy, childbirth and the puerperium). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within O30.20 (Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs), O30.201 is specifically for Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester. Related codes cover second trimester (O30.202), third trimester (O30.203) and unspecified trimester (O30.209).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 817 (Other Antepartum Diagnoses with O.R. Procedures with MCC, relative weight 2.0534), DRG 818 (Other Antepartum Diagnoses with O.R. Procedures with CC, relative weight 1.2942), DRG 819 (Other Antepartum Diagnoses with O.R. Procedures without CC/MCC, relative weight 0.7739), DRG 831 (Other Antepartum Diagnoses without O.R. Procedures with MCC, relative weight 1.1558), DRG 832 (Other Antepartum Diagnoses without O.R. Procedures with CC, relative weight 0.7585) and DRG 833 (Other Antepartum Diagnoses without O.R. Procedures without CC/MCC, relative weight 0.5002), in MDC 14 (Pregnancy, Childbirth and the Puerperium), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

The Medicare Code Editor treats this as a maternity diagnosis, expected only for patients age 9 through 64.

It is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 651.21 (Quadruplet pregnancy, delivered, with or without mention of antepartum condition), 651.21 (Quadruplet pregnancy, delivered, with or without mention of antepartum condition), 651.23 (Quadruplet pregnancy, antepartum condition or complication) and 2 more.

Notes that apply from higher levels

Instructions written at a parent level also apply to O30.201.

› From O30 Multiple gestation
Code also
  • any complications specific to multiple gestation

Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 651.21Quadruplet pregnancy, delivered, with or without mention of antepartum conditionapproximate
  • 651.21Quadruplet pregnancy, delivered, with or without mention of antepartum conditionapproximate, combination
  • 651.23Quadruplet pregnancy, antepartum condition or complicationapproximate
  • 651.23Quadruplet pregnancy, antepartum condition or complicationapproximate, combination
  • V91.20Quadruplet gestation, unspecified number of placenta and unspecified number of amniotic sacsapproximate, combination

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about O30.201

Is O30.201 billable?

Yes. O30.201 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can O30.201 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict O30.201 as a principal diagnosis.

Is O30.201 a CC or MCC?

O30.201 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does O30.201 group to?

O30.201 is used in the MS-DRG v44.0 logic for MS-DRG 817 (Other Antepartum Diagnoses with O.R. Procedures with MCC), MS-DRG 818 (Other Antepartum Diagnoses with O.R. Procedures with CC), MS-DRG 819 (Other Antepartum Diagnoses with O.R. Procedures without CC/MCC), MS-DRG 831 (Other Antepartum Diagnoses without O.R. Procedures with MCC), MS-DRG 832 (Other Antepartum Diagnoses without O.R. Procedures with CC) and MS-DRG 833 (Other Antepartum Diagnoses without O.R. Procedures without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for O30.201?

The CMS General Equivalence Mappings map O30.201 to ICD-9-CM 651.21, 651.21, 651.23, 651.23 and 1 more.