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ICD-10-CM 2027

ICD-10 code for Post-dates

O48.0

Post-term pregnancy

✓ Billable / specificMaternity · age 9–64Female only

From the official ICD-10-CM alphabetic index entry “Post-dates (40-42 weeks) (pregnancy) (mother)”. Page updated September 29, 2026.

About coding Post-dates

The ICD-10-CM code for Post-dates is O48.0 (Post-term pregnancy). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on O48.0.

Within O48 (late pregnancy), O48.0 is specifically for Post-term pregnancy. Related codes cover prolonged pregnancy (O48.1).

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 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.

More specific Post-dates codes (official index)

  • more than 42 weeks gestation O48.1 — Prolonged pregnancy

Common questions about Post-dates ICD-10 codes

What is the ICD-10 code for Post-dates?

O48.0 — Post-term pregnancy. More specific codes apply when the documentation supports them: O48.1.

Is O48.0 billable?

Yes. O48.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can O48.0 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict O48.0 as a principal diagnosis.

Is O48.0 a CC or MCC?

No. O48.0 is neither a CC nor an MCC under MS-DRG v44.0.