O10

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

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

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O10:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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