ICD-10-CM 2027
ICD-10 code for vasospasm
From the official ICD-10-CM alphabetic index entry “Vasospasm (vasoconstriction)”. Page updated September 29, 2026.
About coding vasospasm
The ICD-10-CM code for vasospasm is I73.9 (Peripheral vascular disease, unspecified). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I73.9.
Within I73, choose I73.9 (Peripheral vascular disease, unspecified) only when documentation doesn't support a more specific option: Raynaud's syndrome (I73.0), Thromboangiitis obliterans [Buerger's disease] (I73.1) and other specified peripheral vascular diseases (I73.8).
Don't report I73.9 together with the conditions in its Excludes1 note: atherosclerosis of the extremities (I70.2--I70.7-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific vasospasm codes (official index)
- cerebral (cerebrovascular) (artery) I67.848 — Other cerebrovascular vasospasm and vasoconstriction
- reversible I67.841 — Reversible cerebrovascular vasoconstriction syndrome
- coronary I20.1 — Angina pectoris with documented spasm
- nerve
- arm
- brachial plexus G54.0 — Brachial plexus disorders
- cervical plexus G54.2 — Cervical root disorders, not elsewhere classified
- leg
- peripheral NOS I73.9 — Peripheral vascular disease, unspecified
- retina (artery)
Don't confuse with (Excludes1 for I73.9)
Common questions about vasospasm ICD-10 codes
What is the ICD-10 code for vasospasm?
- I73.9 — Peripheral vascular disease, unspecified. More specific codes apply when the documentation supports them: I67.848, I67.841, I20.1, G54.0 and others below.
What is the ICD-10 code for cerebral vasospasm?
- I67.848 — Other cerebrovascular vasospasm and vasoconstriction.
What is the ICD-10 code for coronary vasospasm?
- I20.1 — Angina pectoris with documented spasm.
What is the ICD-10 code for peripheral nos vasospasm?
- I73.9 — Peripheral vascular disease, unspecified.
Is I73.9 billable?
- Yes. I73.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I73.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I73.9 as a principal diagnosis.
Is I73.9 a CC or MCC?
- No. I73.9 is neither a CC nor an MCC under MS-DRG v44.0.