ICD-10-CM · Chapter 15 · O00–O9A
O11.1
Pre-existing hypertension with pre-eclampsia, first trimester
Pregnancy, childbirth and the puerperium
Quick facts
- Code
- O11.1
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 15 — Pregnancy, childbirth and the puerperium
- Category
- O11 — Pre-existing hypertension with pre-eclampsia
- Specificity
- 4 characters
How coders use this code
ICD-10-CM O11.1 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of pre-existing hypertension with pre-eclampsia, first 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 O11
- O11Pre-existing hypertension with pre-eclampsia
- O11.2Pre-existing hypertension with pre-eclampsia, second trimester
- O11.3Pre-existing hypertension with pre-eclampsia, third trimester
- O11.4Pre-existing hypertension with pre-eclampsia, complicating childbirth
- O11.5Pre-existing hypertension with pre-eclampsia, complicating the puerperium
- O11.9Pre-existing hypertension with pre-eclampsia, 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.