Inflammatory myopathy

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Inflammatory myopathy with abundant macrophages

ORPHA:247718Disease

Also called IMAM

What it is

A rare idiopathic inflammatory myopathy characterized by diffuse destructive infiltration of CD68+ macrophages into the fascia rather than muscle fibers in muscle biopsies, proximal muscle weakness and myalgia with or without scaly dermatomyositis-like or atypical non-dermatomyositis-like skin lesions, elevation of creatine kinase levels and thickening of muscle fascia in muscle MRI.

Key facts

Inheritance
Not applicable
Classified as
Disease

ICD-10 codes

G72.4filed under a broader ICD-10 category — shared with 1 other rare disease

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Benefit programs to look at

Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.

Cross-references

MONDO 0016609UMLS C4707791

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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