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ICD-10-CM 2027 diagnosis code

O80Encounter for full-term uncomplicated delivery

✓ Billable / specificPOA exemptMaternity · age 9–64Female only

O80 is a valid, billable ICD-10-CM code for encounter for full-term uncomplicated delivery. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 O80

O80 is the ICD-10-CM diagnosis code for encounter for full-term uncomplicated delivery. It belongs to block O80-O82 (encounter for delivery) 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.

Use an additional code to indicate outcome of delivery (Z37.0).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 998 (Principal Diagnosis Invalid as Discharge Diagnosis), 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 is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

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 650 (normal delivery).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Delivery requiring minimal or no assistance, with or without episiotomy, without fetal manipulation [e.g., rotation version] or instrumentation [forceps] of a spontaneous, cephalic, vaginal, full-term, single, live-born infant. This code is for use as a single diagnosis code and is not to be used with any other code from chapter 15.
Use additional codeAdd a secondary code to fully describe the condition
  • code to indicate outcome of delivery (Z37.0)

Notes that apply from higher levels

Instructions written at a parent level also apply to O80.

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

Alphabetic index entries

7 entries

Terms in the official ICD-10-CM index that lead to O80.

Codes whose notes reference O80

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.

MDC 14 · Pregnancy, Childbirth and the Puerperium

ICD-9-CM equivalent

Converter →
  • 650Normal deliveryexact

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 O80

Is O80 billable?

Yes. O80 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can O80 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict O80 as a principal diagnosis.

Is O80 a CC or MCC?

No. O80 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does O80 group to?

O80 is used in the MS-DRG v44.0 logic for MS-DRG 998 (Principal Diagnosis Invalid as Discharge Diagnosis). 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 O80?

The CMS General Equivalence Mappings map O80 to ICD-9-CM 650.