Stress fracture, unspecified humerus, sequela

This code signifies a stress fracture of an unspecified humerus that is now a sequela, meaning it represents a late effect or complication of a previously healed or resolved stress fracture. It indicates a long-term problem or residual condition stemming from the original injury, rather than an acute or active fracture.

This code is appropriate when documentation clearly indicates a patient is experiencing a residual effect or complication directly attributable to a past stress fracture of the humerus, where the specific side (left or right) is not documented. Examples include chronic pain, deformity, or functional limitation after the fracture itself has healed. Documentation should explicitly state "sequela of stress fracture" or similar language.

• Ensure documentation explicitly links the current condition to a past stress fracture and specifies it as a sequela.
• Avoid using this code for active or acute stress fractures; those require codes from the M84.32- series without the "S" seventh character.
• If the laterality of the humerus is specified (left or right), a more specific code from M84.321S or M84.322S should be used.