ICD-10-CM 2027 diagnosis code
O87.3Cerebral venous thrombosis in the puerperium
O87.3 is a valid, billable ICD-10-CM code for cerebral venous thrombosis in the puerperium. 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 O87.3
O87.3 is the ICD-10-CM diagnosis code for cerebral venous thrombosis in the puerperium. It belongs to category O87 (venous complications and hemorrhoids in the puerperium), block O85-O92 (complications predominantly related to the puerperium) 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 O87 (venous complications and hemorrhoids in the puerperium), O87.3 is specifically for cerebral venous thrombosis in the puerperium. Related codes cover superficial thrombophlebitis in the puerperium (O87.0), deep phlebothrombosis in the puerperium (O87.1), hemorrhoids in the puerperium (O87.2), varicose veins of lower extremity in the puerperium (O87.4), other venous complications in the puerperium (O87.8) and venous complication in the puerperium, unspecified (O87.9).
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 769 (Postpartum and Post Abortion Diagnoses with O.R. Procedures, relative weight 1.6673) and DRG 776 (Postpartum and Post Abortion Diagnoses without O.R. Procedures, relative weight 0.6721), 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 671.52 (other phlebitis and thrombosis complicating pregnancy and the puerperium, delivered, with mention of postpartum complication) and 671.54 (other phlebitis and thrombosis complicating pregnancy and the puerperium, postpartum condition or complication).
Coding notes
- Cerebrovenous sinus thrombosis in the puerperium
Notes that apply from higher levels
Instructions written at a parent level also apply to O87.3.
Broader instructions also apply from O85-O92 Complications predominantly related to the puerperium and Chapter 15: Pregnancy, childbirth and the puerperium.
Alphabetic index entries
4 entriesTerms in the official ICD-10-CM index that lead to O87.3.
- Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › cerebrovenous sinus › puerperium
- Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › intracranial (arterial) › venous sinus (any) › puerperium
- Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › puerperal, postpartum › brain (artery) › venous (sinus)
- Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) › puerperal, postpartum › cerebral (artery) › venous (sinus)
Codes whose notes reference O87.3
- G08Excludes1
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
MDC 14 · Pregnancy, Childbirth and the Puerperium
ICD-9-CM equivalent
Converter →- 671.52Other phlebitis and thrombosis complicating pregnancy and the puerperium, delivered, with mention of postpartum complicationapproximate
- 671.54Other phlebitis and thrombosis complicating pregnancy and the puerperium, postpartum condition or complicationapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O87.3
Is O87.3 billable?
- Yes. O87.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O87.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O87.3 as a principal diagnosis.
Is O87.3 a CC or MCC?
- O87.3 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does O87.3 group to?
- O87.3 is used in the MS-DRG v44.0 logic for MS-DRG 769 (Postpartum and Post Abortion Diagnoses with O.R. Procedures) and MS-DRG 776 (Postpartum and Post Abortion Diagnoses without O.R. Procedures). 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 O87.3?
- The CMS General Equivalence Mappings map O87.3 to ICD-9-CM 671.52 and 671.54.