M1A.0591
Idiopathic chronic gout, unspecified hip, with tophus (tophi)
BillableComplete code, valid to report
M1A.0591 (also written M1A0591) is a billable ICD-10-CM diagnosis code for idiopathic chronic gout, unspecified hip, with tophus (tophi). It is part of the FY2027 code set, effective October 1, 2026. It is one of the 242 codes in category M1A (Chronic gout). Its 7th character, 1, means with tophus (tophi). Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 11 Excludes2 entries.
7th character
Category M1A requires a 7th character.
Assembled code
Open code
Use additional code
Add the listed code as a secondary code, if known.
Inherited from M1A Chronic gout
- 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)
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
Also from chapter/block level (1 note)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition