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FY2027

ICD-10 Code for Ischemia

The ICD-10-CM code for ischemia is I99.8 — Other disorder of circulatory system. This is the code the Alphabetic Index gives for ischemia with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

Billable

Which ischemia code should you use?

The Alphabetic Index lists 30 codes under Ischemia, ischemic. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

cardiomyopathyI25.5Ischemic cardiomyopathy
cerebralI67.82Cerebral ischemia
colon chronicK55.1Chronic vascular disorders of intestine
demandI24.89Other forms of acute ischemic heart disease
heartI25.9Chronic ischemic heart disease, unspecified
intestineK55.9Vascular disorder of intestine, unspecified
kidneyN28.0Ischemia and infarction of kidney
mesenteric, acuteK55.059Acute (reversible) ischemia of intestine, part and extent unspecified
muscle, traumaticT79.6Traumatic ischemia of musclenot billable
myocardium, myocardialI25.9Chronic ischemic heart disease, unspecified
nipple, intraoperative and postproceduralN99.860Intraoperative and postprocedural nipple ischemia
renalN28.0Ischemia and infarction of kidney
spinal cordG95.11Acute infarction of spinal cord (embolic) (nonembolic)
supplyI25.9Chronic ischemic heart disease, unspecified

Ischemia bowel

acuteK55.059Acute (reversible) ischemia of intestine, part and extent unspecified
chronicK55.1Chronic vascular disorders of intestine
due to mesenteric artery insufficiencyK55.1Chronic vascular disorders of intestine

Ischemia cerebral

arterioscleroticI67.2Cerebral atherosclerosis
intermittentG45.9Transient cerebral ischemic attack, unspecified
newbornP91.0Neonatal cerebral ischemia
recurrent focalG45.8Other transient cerebral ischemic attacks and related syndromes
transientG45.9Transient cerebral ischemic attack, unspecified

Ischemia demand

with myocardial infarctionI21.A1Myocardial infarction type 2
resulting in myocardial infarctionI21.A1Myocardial infarction type 2

Ischemia heart

acute or with a stated duration of 4 weeks or lessI24.9Acute ischemic heart disease, unspecified
subacuteI24.9Acute ischemic heart disease, unspecified

Ischemia intestine

acuteK55.059Acute (reversible) ischemia of intestine, part and extent unspecified
chronicK55.1Chronic vascular disorders of intestine
due to mesenteric artery insufficiencyK55.1Chronic vascular disorders of intestine
acute › diffuseK55.052Diffuse acute (reversible) ischemia of intestine, part unspecified
acute › focalK55.051Focal (segmental) acute (reversible) ischemia of intestine, part unspecified
acute › largeK55.039Acute (reversible) ischemia of large intestine, extent unspecified
acute › smallK55.019Acute (reversible) ischemia of small intestine, extent unspecified
acute › large › diffuseK55.032Diffuse acute (reversible) ischemia of large intestine
acute › large › focalK55.031Focal (segmental) acute (reversible) ischemia of large intestine
acute › small › diffuseK55.012Diffuse acute (reversible) ischemia of small intestine
acute › small › focalK55.011Focal (segmental) acute (reversible) ischemia of small intestine

Ischemia myocardium, myocardial

acute, without myocardial infarctionI51.3Intracardiac thrombosis, not elsewhere classified
silentI25.6Silent myocardial ischemia
transient of newbornP29.4Transient myocardial ischemia in newborn

Ischemia small bowel

acuteK55.019Acute (reversible) ischemia of small intestine, extent unspecified
chronicK55.1Chronic vascular disorders of intestine
due to mesenteric artery insufficiencyK55.1Chronic vascular disorders of intestine
acute › diffuseK55.012Diffuse acute (reversible) ischemia of small intestine
acute › focalK55.011Focal (segmental) acute (reversible) ischemia of small intestine

Ischemia supply

due to vasospasmI20.1Angina pectoris with documented spasm

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources