Hypertension ICD-10 code
The ICD-10-CM code for hypertension is I10 — essential (primary) hypertension. It is billable and valid for submission on a claim. There are 16 related codes, and which one you use depends on what the documentation supports.
Also written as htn, high blood pressure.
The mistake coders make here
I10 is essential hypertension alone. If heart disease or CKD is documented WITH the hypertension, ICD-10-CM presumes the link and wants a combination code from I11–I13 instead.
All ICD-10-CM codes for hypertension
14 of 16 are billable. Green means you can submit it as-is.
| Code | Use it when |
|---|---|
| I10 | Essential (primary) hypertension |
| I11.9 | Hypertensive heart disease without heart failure |
| I12.9 | Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
| I13.10 | Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
| O10.01 | Pre-existing essential hypertension complicating pregnancynot billable on its own |
| O10.02 | Pre-existing essential hypertension complicating childbirth |
| O10.03 | Pre-existing essential hypertension complicating the puerperium |
| O10.011 | Pre-existing essential hypertension complicating pregnancy, first trimester |
| O10.013 | Pre-existing essential hypertension complicating pregnancy, third trimester |
| O10.012 | Pre-existing essential hypertension complicating pregnancy, second trimester |
| O10.019 | Pre-existing essential hypertension complicating pregnancy, unspecified trimester |
| O10.0 | Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperiumnot billable on its own |
| G93.2 | Benign intracranial hypertension |
| K76.6 | Portal hypertension |
| I27.21 | Secondary pulmonary arterial hypertension |
| P29.2 | Neonatal hypertension |