CAD ICD-10 Code: I25.10 and Related ICD-10-CM Codes
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CAD ICD 10 refers to the codes used for coronary artery disease (CAD) in the International Classification of Diseases, 10th Revision. The World Health Organization (WHO) owns and publishes ICD-10.
ICD-10-CM is the clinical modification used in the United States to code diagnoses. According to the CDC, its National Center for Health Statistics develops ICD-10-CM with WHO's permission.
For coronary artery disease without angina, the most common code is I25.10, a billable ICD-10-CM code. Coronary artery disease is a narrowing or blockage of the coronary arteries, the arteries that supply the heart muscle, usually caused by plaque buildup (atherosclerosis).
I25.10 does not cover angina, a heart attack or other complications.
Those have their own codes, such as I25.11- for CAD with angina, I21.- for an acute heart attack and I25.2 for an old heart attack. Chronic ischemic heart disease falls under category I25.
Clinicians, coders, and other health care providers must have the proper knowledge to understand and manage the Changes in current definitions, organization of codes, and coding rules to make accurate documentation.
CAD ICD 10 CODING TREE
I25.10 is the ICD-10-CM code for "Atherosclerotic heart disease of native coronary artery without angina pectoris."
The list below shows where the CAD codes sit in ICD-10-CM. When a patient has both coronary atherosclerosis and angina, ICD-10-CM assumes the two are linked and uses a combination code from I25.11-.
These combination codes for coronary atherosclerosis with angina are split into subcategories by type of angina:
- I00-I99 – Diseases of the circulatory system
- I20-I25 – Ischemic heart diseases
- I25 – Chronic ischemic heart disease
- I25.1 – Atherosclerotic heart disease of native coronary artery
- I25.10 – Atherosclerotic heart disease of native coronary artery without angina pectoris
- I25.11 – Atherosclerotic heart disease of native coronary artery with angina pectoris
- I25.110 – Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
- I25.111 – Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
- I25.112 – Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
- I25.118 – Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
- I25.119 – Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
Thickening, hardening, and loss of elasticity of the coronary arteries cause coronary artery disease. Clinicians may document it with terms such as:
- Coronary arteriosclerosis
- Arteriosclerotic cardiovascular disease
- Arteriosclerotic vascular disease
- Calcific coronary arteriosclerosis
- Coronary artery disease
- Single, double, triple or multiple vessel coronary artery disease
Chronic total occlusion of Coronary artery
Some related situations have separate or additional codes. Always check the current ICD-10-CM code set and its notes before assigning a code:
- Chronic total occlusion of coronary artery: I25.82
- Coronary atherosclerosis due to a calcified coronary lesion: I25.84
- Coronary atherosclerosis due to lipid rich plaque: I25.83
- Atherosclerosis of coronary artery bypass graft(s): codes in I25.7- and I25.810
- History of a previous heart attack (old myocardial infarction): I25.2
- Presence of a coronary stent or other angioplasty implant: Z95.5
- Coronary angioplasty status: Z98.61
Coronary artery disease in a patient who has had coronary angioplasty may be coded with the CAD code plus a status code, such as Z98.61 or Z95.5.
Sources
- ICD-10-CM, Centers for Disease Control and Prevention, National Center for Health Statistics
- Clinical Table Search Service: ICD-10-CM, National Library of Medicine
