I10-I1A — Hypertensive diseases
ICD-10-CM codes I10-I1A cover hypertensive diseases, within diseases of the circulatory system. The block holds 25 codes across 7 categories, of which 18 are billable and 7 are header codes that cannot be submitted on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Use additional code
Add a secondary code to capture the detail described below.
Risk adjustment in I10-I1A
0 codes in this block map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded. Under-coding here is money left on the table; over-coding here is what audits are for.
- HCC 226 Heart Failure, Except End Stage and Acute
- HCC 326 Chronic Kidney Disease, Stage 5
What else to watch in I10-I1A
- 18 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.