FY2026
Effective from
- Code-level rules changed
Isthmocele
Billable diagnosis code
CDC/NCHS · FY2026maternal care for cesarean scar defect (isthmocele) (O34.22)
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗Grouping depends on the complete encounter and CMS grouper logic.
2026-04-01 – 2026-09-30
CMS · MS-DRG 43.1First observed · 2022-10-01
Latest recorded change · FY2026
Effective from
Isthmocele
Billable diagnosis code
CDC/NCHS · FY2026| All editions | Effective from | Code history |
|---|---|---|
| FY2023 | 2022-10-01 | Added |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | Code-level rules changed |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Isthmocele (non-pregnant state)
maternal care for cesarean scar defect (isthmocele) (O34.22)
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: N85.8
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| N85.0 | Endometrial hyperplasia | Category · further specificity required |
| N85.2 | Hypertrophy of uterus | Billable / specific |
| N85.3 | Subinvolution of uterus | Billable / specific |
| N85.4 | Malposition of uterus | Billable / specific |
| N85.5 | Inversion of uterus | Billable / specific |
| N85.6 | Intrauterine synechiae | Billable / specific |
| N85.7 | Hematometra | Billable / specific |
| N85.8 | Other specified noninflammatory disorders of uterus | Billable / specific |
| N85.9 | Noninflammatory disorder of uterus, unspecified | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗