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ICD-10-CM · FY 2026 APRIL UPDATE

O10

Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
O10.0Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperiumCategory
O10.01Pre-existing essential hypertension complicating pregnancyCategory
O10.011Pre-existing essential hypertension complicating pregnancy, first trimesterBillable
O10.012Pre-existing essential hypertension complicating pregnancy, second trimesterBillable
O10.013Pre-existing essential hypertension complicating pregnancy, third trimesterBillable
O10.019Pre-existing essential hypertension complicating pregnancy, unspecified trimesterBillable
O10.02Pre-existing essential hypertension complicating childbirthBillable
O10.03Pre-existing essential hypertension complicating the puerperiumBillable
O10.1Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperiumCategory
O10.11Pre-existing hypertensive heart disease complicating pregnancyCategory
O10.111Pre-existing hypertensive heart disease complicating pregnancy, first trimesterBillable
O10.112Pre-existing hypertensive heart disease complicating pregnancy, second trimesterBillable
O10.113Pre-existing hypertensive heart disease complicating pregnancy, third trimesterBillable
O10.119Pre-existing hypertensive heart disease complicating pregnancy, unspecified trimesterBillable
O10.12Pre-existing hypertensive heart disease complicating childbirthBillable
O10.13Pre-existing hypertensive heart disease complicating the puerperiumBillable
O10.2Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperiumCategory
O10.21Pre-existing hypertensive chronic kidney disease complicating pregnancyCategory
O10.211Pre-existing hypertensive chronic kidney disease complicating pregnancy, first trimesterBillable
O10.212Pre-existing hypertensive chronic kidney disease complicating pregnancy, second trimesterBillable
O10.213Pre-existing hypertensive chronic kidney disease complicating pregnancy, third trimesterBillable
O10.219Pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimesterBillable
O10.22Pre-existing hypertensive chronic kidney disease complicating childbirthBillable
O10.23Pre-existing hypertensive chronic kidney disease complicating the puerperiumBillable
O10.3Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperiumCategory
O10.31Pre-existing hypertensive heart and chronic kidney disease complicating pregnancyCategory
O10.311Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimesterBillable
O10.312Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimesterBillable
O10.313Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimesterBillable
O10.319Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimesterBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

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ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.