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IMEPro
I21.9 Internal Medicine
Updated March 2026

Acute myocardial infarction, unspecified

ICD-10 Code: I21.9 · Body Part: Head/Brain (TBI)

QME Evaluation Process

Cardiac evaluation, EF assessment, stress testing, functional capacity. Chapter 3 cardiovascular impairment. Evaluate work-related stress causation per Labor Code 3212 presumption for safety officers.

Typical Impairment Rating

15-65% WPI based on EF and functional class

AMA Guides Edition

5th Edition

Common Treatments

+ PCI/stenting
+ CABG
+ Cardiac rehabilitation
+ Medication management

Related Conditions

Body Part Guide

Head/Brain (TBI) Evaluation Guide

Impairment rating methods, common conditions, and QME evaluation protocols

View Guide →

QME Specialties for Acute myocardial infarction, unspecified

Find a QME Specialist

Browse QME-certified physicians who evaluate acute myocardial infarction, unspecified and related head/brain (tbi) conditions in California.

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Frequently Asked Questions

What is Acute myocardial infarction, unspecified (I21.9)?

Acute myocardial infarction, unspecified is an ICD-10 diagnosis code (I21.9) classified under Internal Medicine conditions. It affects the Head/Brain (TBI) and is commonly encountered in California workers' compensation claims. QME physicians evaluate this condition using AMA Guides 5th Edition protocols.

How is I21.9 rated for impairment?

The typical whole person impairment (WPI) range for Acute myocardial infarction, unspecified is 15-65% WPI based on EF and functional class. The exact rating depends on clinical findings, imaging, and the evaluation method (DRE or ROM) chosen by the QME physician per AMA Guides 5th Edition.

What is the QME evaluation process for I21.9?

Cardiac evaluation, EF assessment, stress testing, functional capacity. Chapter 3 cardiovascular impairment. Evaluate work-related stress causation per Labor Code 3212 presumption for safety officers.

What treatments are common for Acute myocardial infarction, unspecified?

Common treatments for Acute myocardial infarction, unspecified include PCI/stenting, CABG, Cardiac rehabilitation, Medication management. Treatment appropriateness and outcomes are considered during the QME evaluation when determining permanent and stationary status and apportionment.