O34.21 Maternal care for scar from previous cesarean delivery

The ICD-10-CM code for Maternal care for scar from previous cesarean delivery is O34.21 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O30-O48: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Category O34

70 codes (54 billable)

FY2026 Status

Stable since FY2024

U.S. Hospital Utilization

• An estimated 518,759 U.S. inpatient stays in 2016 included O34.21 among the documented diagnoses.
• 366,610 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)