ICD-10-CM · Chapter 15 · O00–O9A
O10.42
Pre-existing secondary hypertension complicating childbirth
Pregnancy, childbirth and the puerperium
Quick facts
- Code
- O10.42
- 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
- 5 characters
How coders use this code
ICD-10-CM O10.42 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of pre-existing secondary hypertension complicating childbirth. 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
- O10.012Pre-existing essential hypertension complicating pregnancy, second 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
Want to learn coding?
Master ICD-10-CM in 90 days.
Medita's 90-day curriculum is calibrated to the CPC (AAPC), CCA, and CCS (AHIMA) exam blueprints. Day 1 is free.