Is ICD-10-CM code O10 billable?

No, O10 (Pre-existing hypertension complicating pregnancy, childbirth and the puerperium) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code O10 belong to?

O10 belongs to Chapter 15 of the ICD-10-CM tabular list: O00–O9A (Pregnancy, Childbirth and the Puerperium).

O10Non-billable

Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Pregnancy, Childbirth and the Puerperium·Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)·category·FY 2026

Use a more specific code (0 billable, 6 non-billable)

O10.0Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperiumhas subcodes O10.1Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperiumhas subcodes O10.2Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperiumhas subcodes O10.3Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperiumhas subcodes O10.4Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperiumhas subcodes O10.9Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperiumhas subcodes

CH15 Parent Instructions

Excludes1(Not coded here. Use a different code.)

supervision of normal pregnancy (Z34.-)

Excludes2(Not included here. Code separately if applicable.)

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

Use Additional Code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Instructional Notes

Includes

pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium

Excludes2(Not included here. Code separately if applicable.)

pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)

Clinical Hierarchy

BillableHas subcodes

CH15Pregnancy, childbirth and the puerperium (O00-O9A)

O10-O16Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)

O10Pre-existing hypertension complicating pregnancy, childbirth and the puerperiumNot billable

O10.0Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperiumSubcodes

O10.1Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperiumSubcodes

O10.2Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperiumSubcodes

O10.3Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperiumSubcodes

O10.4Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperiumSubcodes

O10.9Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperiumSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.