ICD-10-CM · Chapter 15 · O00–O9A
O10.012
Pre-existing essential hypertension complicating pregnancy, second trimester
Pregnancy, childbirth and the puerperium
Quick facts
- Code
- O10.012
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 15 — Pregnancy, childbirth and the puerperium
- Category
- O10 — Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
- Specificity
- 6 characters
How coders use this code
ICD-10-CM O10.012 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of pre-existing essential hypertension complicating pregnancy, second trimester. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in O10
- O10Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
- O10.0Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
- O10.01Pre-existing essential hypertension complicating pregnancy
- O10.011Pre-existing essential hypertension complicating pregnancy, first trimester
- O10.013Pre-existing essential hypertension complicating pregnancy, third trimester
- O10.019Pre-existing essential hypertension complicating pregnancy, unspecified trimester
- O10.02Pre-existing essential hypertension complicating childbirth
- O10.03Pre-existing essential hypertension complicating the puerperium
- O10.1Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
- O10.11Pre-existing hypertensive heart disease complicating pregnancy
- O10.111Pre-existing hypertensive heart disease complicating pregnancy, first trimester
- O10.112Pre-existing hypertensive heart disease complicating pregnancy, second trimester
- O10.113Pre-existing hypertensive heart disease complicating pregnancy, third trimester
- O10.119Pre-existing hypertensive heart disease complicating pregnancy, unspecified trimester
- O10.12Pre-existing hypertensive heart disease complicating childbirth
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