M1A is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Chronic gout.
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Code to identify:
Autonomic neuropathy in diseases classified elsewhere (G99.0)
Calculus of urinary tract in diseases classified elsewhere (N22)
Cardiomyopathy in diseases classified elsewhere (I43)
Disorders of external ear in diseases classified elsewhere (H61.1-, H62.8-)
Disorders of iris and ciliary body in diseases classified elsewhere (H22)
Glomerular disorders in diseases classified elsewhere (N08)
Gout NOS (M10.-)
Acute gout (M10.-)
The appropriate 7th character is to be added to each code from category M1A
0: without tophus (tophi)
1: with tophus (tophi)
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