MCMCB Pro
I60

I60Nontraumatic subarachnoid hemorrhage

Non-billable headerICD-10-CM

I60 is a non-billable header ICD-10-CM code for nontraumatic subarachnoid hemorrhage. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • syphilitic ruptured cerebral aneurysm (A52.05)

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.

  • sequelae of subarachnoid hemorrhage (I69.0-)

Use additional code

Add a secondary code to capture the detail described below.

  • code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)

Other codes that can never be billed with I60

These codes carry an Excludes1 note pointing at I60. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I60 alone.

  • Q28Other congenital malformations of circulatory system
  • G31.84Mild cognitive impairment of uncertain or unknown etiology
  • I67.0Dissection of cerebral arteries, nonruptured
  • I67.1Cerebral aneurysm, nonruptured

Risk adjustment

I60 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead I60

10 child codes. Green means billable.

Questions about I60

Is I60 a billable ICD-10-CM code?
No. I60 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I60 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).
What cannot be coded together with I60?
I60 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.