Idiopathic aseptic necrosis of unspecified ulna

📋Clinical Description

This code signifies a condition where bone tissue in the ulna dies due to a lack of blood supply, without an identifiable cause (idiopathic) and without infection (aseptic). This necrosis affects an unspecified ulna, meaning it's not specified as left or right.

🎯When to Use

Apply this code when documentation confirms avascular necrosis of the ulna, and the etiology is explicitly stated as idiopathic and aseptic. This code is appropriate when the laterality of the affected ulna is not specified in the medical record.

💡Coding Tips

Ensure documentation clearly states "idiopathic" and "aseptic" to support this specific code.
If laterality (left or right ulna) is documented, a more specific code (M87.031, M87.032) should be used.
Distinguish from osteomyelitis (infection of bone) or necrosis due to trauma or other specified causes.

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Code Hierarchy

▲M87.03Idiopathic aseptic necrosis of radius, ulna and carpus

M87.036(current)

Crosswalks

733.49ApproxICD-9

Same Category

M87Osteonecrosis M87.0Idiopathic aseptic necrosis of bone M87.00Idiopathic aseptic necrosis of unspecified bone M87.01Idiopathic aseptic necrosis of shoulder M87.011Idiopathic aseptic necrosis of right shoulder