O13.3 ICD-10-CM Code: Gestational [pregnancy-induced] hypertension without significant proteinuria, third 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
Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester is a billable ICD-10-CM diagnosis code (O13.3).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O13.3 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- gestational hypertension NOS
- transient hypertension of pregnancy
Nearest Codes in This Family
Official ICD-10-CM classifications closest to O13.3 in its code family, with their registry titles.
- O13 — Gestational [pregnancy-induced] hypertension without significant proteinuria
- O13.1 — Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
- O13.2 — Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
- O13.4 — Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
- O13.5 — Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
- O13.9 — Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester