I70.9 — Other and unspecified atherosclerosis
I70.9 is a non-billable header ICD-10-CM code for other and unspecified atherosclerosis. It cannot be billed on its own: choose one of the more specific child codes below.
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.
- disorders of pyrophosphate metabolism (E83.82-)
Risk adjustment
I70.9 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.
How I70.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I70.9.
- Obstruction, obstructed, obstructive›artery
- Occlusion, occluded›artery
Code to one of these instead I70.9
3 child codes. Green means billable.
Related codes at this level
Codes that share I70. If I70.9 is not quite right, the correct code is usually one of these.
- I70.0Atherosclerosis of aorta
- I70.1Atherosclerosis of renal artery
- I70.2Atherosclerosis of native arteries of the extremities
- I70.3Atherosclerosis of unspecified type of bypass graft(s) of the extremities
- I70.4Atherosclerosis of autologous vein bypass graft(s) of the extremities
- I70.5Atherosclerosis of nonautologous biological bypass graft(s) of the extremities
- I70.6Atherosclerosis of nonbiological bypass graft(s) of the extremities
- I70.7Atherosclerosis of other type of bypass graft(s) of the extremities
- I70.8Atherosclerosis of other arteries
Questions about I70.9
- Is I70.9 a billable ICD-10-CM code?
- No. I70.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does I70.9 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).