ICD-10-CM Code I10
Essential (primary) hypertension
Diagnosis information
Billable
Yes
Valid for claim submission
Chapter
I00–I99
Diseases of the circulatory system
Risk adjustment
None
Not risk-adjustable (V28)
Procedures commonly billed with I10
CPT/HCPCS procedures frequently paired with I10 on claims. The diagnosis helps support medical necessity for the service, but documentation, the service performed, and payer/CMS policy all apply — link each line item to the diagnosis that best documents why it was needed.
Documentation & coding notes
- I10 is a billable/specific ICD-10-CM code — it can be reported as a primary or secondary diagnosis when the documentation supports it. Code to the highest level of specificity the record allows.
- Always verify the code against the current ICD-10-CM Official Guidelines and the payer's coverage policy before submitting — coverage, medical necessity edits, and sequencing rules vary by payer.
Related I00–I99 codes
Questions about coding I10?
Ask D3 — free AI backed by CMS, ICD-10-CM, and major-payer data. Get a cited answer in seconds, no signup.
Medical coding disclaimer
ICD-10-CM codes and descriptions shown are from the CMS FY2026 official code set and HCC mappings from the CMS-HCC V28 model (payment year 2026), shown for educational reference. Official Guidelines, payer coverage, medical-necessity edits, and sequencing rules vary. Always verify with the current ICD-10-CM Official Guidelines and the payer before submitting claims. D3rx is not responsible for coding or billing outcomes.