ICD-10-CM 2027 diagnosis code
O22.02Varicose veins of lower extremity in pregnancy, second trimester
O22.02 is a valid, billable ICD-10-CM code for varicose veins of lower extremity in pregnancy, second trimester. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Varicose veins of low extrm in pregnancy, second 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 O22.02
O22.02 is the ICD-10-CM diagnosis code for varicose veins of lower extremity in pregnancy, second trimester. It belongs to category O22 (venous complications and hemorrhoids in pregnancy), block O20-O29 (other maternal disorders predominantly related to pregnancy) 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 O22.0 (varicose veins of lower extremity in pregnancy), O22.02 is specifically for varicose veins of lower extremity in pregnancy, second trimester. Related codes cover unspecified trimester (O22.00), first trimester (O22.01) and third trimester (O22.03).
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.
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 671.01 (varicose veins of legs complicating pregnancy and the puerperium, delivered, with or without mention of antepartum condition) and 671.03 (varicose veins of legs complicating pregnancy and the puerperium, antepartum condition or complication).
Notes that apply from higher levels
Instructions written at a parent level also apply to O22.02.
Broader instructions also apply from O20-O29 Other maternal disorders predominantly related to pregnancy and 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.
MDC 14 · Pregnancy, Childbirth and the Puerperium
ICD-9-CM equivalent
Converter →- 671.01Varicose veins of legs complicating pregnancy and the puerperium, delivered, with or without mention of antepartum conditionapproximate
- 671.03Varicose veins of legs complicating pregnancy and the puerperium, antepartum 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 O22.02
Is O22.02 billable?
- Yes. O22.02 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O22.02 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O22.02 as a principal diagnosis.
Is O22.02 a CC or MCC?
- No. O22.02 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does O22.02 group to?
- O22.02 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 O22.02?
- The CMS General Equivalence Mappings map O22.02 to ICD-9-CM 671.01 and 671.03.