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Coronary atherosclerosis due to calcified coronary lesion
I25.84 is a valid billable ICD-10 diagnosis code for Coronary atherosclerosis due to calcified coronary lesion.It is found in the 2025 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2024 - Sep 30, 2025.
↓ See below for any exclusions, inclusions or special notations
When using code I25.84 in processing claims, check the following: — See additional coding rules
- Unacceptable principal diagnosis (PDX) codes - There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.
I25.84 also applies to the following:
Inclusion term(s):
- Coronary atherosclerosis due to severely calcified coronary lesion
Code first
- coronary atherosclerosis (I25.1-, I25.7-, I25.81-)
MS-DRG - Medicare Severity-Diagnosis Related Group
- MDC 05 Diseases & Disorders of the Circulatory System
Atherosclerosis- DRG 302 - ATHEROSCLEROSIS WITH MCC
- DRG 303 - ATHEROSCLEROSIS WITHOUT MCC
Clinical Concepts
The code I25.84 can also be found in the following clinical concepts.
- Cardiology
Coding structure:
ICD-10 code I25.84 is based on the following Tabular structure:
Chapter 9: Diseases of the circulatory system
- Section I20-I25: Ischemic heart diseases
- Category I25: Chronic ischemic heart disease
↑ Parent code:
I25.8 for Other forms of chronic ischemic heart disease
I25.84__
Category
Etiology, Anatomic Site,
Severity, Other Vital Details
Extension
Should you use I25.84 or I2584 (with or without decimal point)?
DO NOT include the decimal point when electronically filing claims as it may be rejected. Some clearinghouses may remove it for youbut to avoid having a rejected claim due to an invalid ICD-10 code, do not include the decimal point when submitting claims electronically.
See also:
- Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification)I70.90
- coronary (artery)I25.10
- due to
- calcified coronary lesion (severely)I25.84
- due to
- coronary (artery)I25.10
- Atherosclerosissee also Arteriosclerosis
- coronary
- arteryI25.10
- due to
- calcified coronary lesion (severely)I25.84
- due to
- arteryI25.10
- coronary
Section I20-I25 — Ischemic heart diseases
Code alsothe presence of hypertension (I10-I1A)
I25 Chronic ischemic heart disease
Use additional code to identify:
chronic total occlusion of coronary artery (I25.82)
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)Excludes2
- non-ischemic myocardial injury (I5A)
I25.1 Atherosclerotic heart disease of native coronary artery
Inclusion term(s):
- Atherosclerotic cardiovascular disease
- Coronary (artery) atheroma
- Coronary (artery) atherosclerosis
- Coronary (artery) disease
- Coronary (artery) sclerosis
I25.10 Atherosclerotic heart disease of native coronary artery without angina pectoris
Inclusion term(s):
- Atherosclerotic heart disease NOS
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
Inclusion term(s):
- Atherosclerotic heart disease with angina NOS
- Atherosclerotic heart disease with ischemic chest pain
I25.2 Old myocardial infarction
Inclusion term(s):
- Healed myocardial infarction
- Past myocardial infarction diagnosed by ECG or other investigation, but currently presenting no symptoms
I25.3 Aneurysm of heart
Inclusion term(s):
- Mural aneurysm
- Ventricular aneurysm
I25.4 Coronary artery aneurysm and dissection
I25.41 Coronary artery aneurysm
Inclusion term(s):
- Coronary arteriovenous fistula, acquired
I25.42 Coronary artery dissection
I25.5 Ischemic cardiomyopathy
I25.6 Silent myocardial ischemia
I25.7 Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
I25.70 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris
- I25.700 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
- I25.701 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
- I25.702 Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris
- I25.708 Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris
- I25.709 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
I25.71 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris
- I25.710 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
- I25.711 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.712 Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris
- I25.718 Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris
- I25.719 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris
I25.72 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris
Inclusion term(s):
- Atherosclerosis of internal mammary artery graft with angina pectoris
- I25.720 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
- I25.721 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.722 Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris
- I25.728 Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris
- I25.729 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris
I25.73 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris
- I25.730 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
- I25.731 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.732 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris
- I25.738 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris
- I25.739 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris
I25.75 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris
- I25.750 Atherosclerosis of native coronary artery of transplanted heart with unstable angina
- I25.751 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm
- I25.752 Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris
- I25.758 Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris
- I25.759 Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris
I25.76 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris
- I25.760 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina
- I25.761 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm
- I25.762 Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris
- I25.768 Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris
- I25.769 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris
I25.79 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris
- I25.790 Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
- I25.791 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.792 Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
- I25.798 Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
- I25.799 Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
I25.8 Other forms of chronic ischemic heart disease
I25.81 Atherosclerosis of other coronary vessels without angina pectoris
- I25.810 Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
Inclusion term(s):
- Atherosclerosis of coronary artery bypass graft NOS
- I25.811 Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
Inclusion term(s):
- Atherosclerosis of native coronary artery of transplanted heart NOS
- I25.812 Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
Inclusion term(s):
- Atherosclerosis of bypass graft of transplanted heart NOS
- I25.810 Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
I25.82 Chronic total occlusion of coronary artery
Inclusion term(s):
- Complete occlusion of coronary artery
- Total occlusion of coronary artery
I25.83 Coronary atherosclerosis due to lipid rich plaque
I25.84 Coronary atherosclerosis due to calcified coronary lesion
Inclusion term(s):
- Coronary atherosclerosis due to severely calcified coronary lesion
I25.85 Chronic coronary microvascular dysfunction
Inclusion term(s):
- Chronic (presentation of) coronary microvascular disease
- Coronary microvascular dysfunction NOS
I25.89 Other forms of chronic ischemic heart disease
I25.9 Chronic ischemic heart disease, unspecified
Inclusion term(s):
- Ischemic heart disease (chronic) NOS
Abbreviations used here:
NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.
NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.
This note further define, or give examples of, the content of the code or category.
List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of “other specified” codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology.For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first, if applicable, followed by the manifestation.Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code.These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 Excludes note is a pure excludes. It means 'NOT CODED HERE!' An Excludes1 note indicates that the code excluded should never be used at the same timeas the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 Excludes note represents 'Not included here'. An Excludes2 note indicates that the condition excluded is not part of the condition it is excluded frombut a patient may have both conditions at the same time. When an Excludes2 note appears under a code it is acceptable to use both the code and the excluded code together.
A “code also” note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction. The sequencing depends on the circumstances of the encounter.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first, if applicable, followed by the manifestation. Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
