O15.00 ICD-10-CM Code: Eclampsia complicating pregnancy, unspecified trimester
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 817 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH MCC (MDC 14)
- MS-DRG 818 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH CC (MDC 14)
- MS-DRG 819 — OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)
- MS-DRG 831 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH MCC (MDC 14)
- MS-DRG 832 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH CC (MDC 14)
- MS-DRG 833 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITHOUT CC/MCC (MDC 14)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Eclampsia complicating pregnancy, unspecified trimester is a billable ICD-10-CM diagnosis code (O15.00).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O15.00 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- convulsions following conditions in O10-O14 and O16
Nearest Codes in This Family
Official ICD-10-CM classifications closest to O15.00 in its code family, with their registry titles.
- O15 — Eclampsia
- O15.0 — Eclampsia complicating pregnancy
- O15.02 — Eclampsia complicating pregnancy, second trimester
- O15.03 — Eclampsia complicating pregnancy, third trimester
- O15.1 — Eclampsia complicating labor
- O15.2 — Eclampsia complicating the puerperium
- O15.9 — Eclampsia, unspecified as to time period