M1A.4Other secondary chronic gout

M1A.4 is the ICD-10-CM diagnosis code for other secondary chronic gout. It belongs to category M1A (chronic gout), block M05-M14 (inflammatory polyarthropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within M1A, choose M1A.4 (Other secondary chronic gout) only when documentation doesn't support a more specific option: idiopathic chronic gout (M1A.0), Lead-induced chronic gout (M1A.1), drug-induced chronic gout (M1A.2), due to renal impairment (M1A.3) and unspecified (M1A.9).

Codes in this range require a 7th character: 0 for without tophus (tophi) and 1 for with tophus (tophi). Use placeholder "X" characters to fill any empty positions before the 7th character.

Code first: associated condition.

Use an additional 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) and 1 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.