Foreign body granuloma of soft tissue, not elsewhere classified, ankle and foot

foreign body granuloma of skin and subcutaneous tissue (L92.3)

code to identify the type of retained foreign body (Z18.-)

• 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)

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

• dermatopolymyositis (M33.-)
• myopathy in amyloidosis (E85.-)
• myopathy in polyarteritis nodosa (M30.0)
• myopathy in rheumatoid arthritis (M05.32)
• myopathy in scleroderma (M34.-)
• myopathy in Sjögren's syndrome (M35.03)
• myopathy in systemic lupus erythematosus (M32.-)

muscular dystrophies and myopathies (G71-G72)

inclusion body myositis [IBM] (G72.41)