Stress fracture

**Inclusion terms:** - Fatigue fracture - March fracture - Stress fracture NOS - Stress reaction

**Excludes1:** - pathological fracture NOS (M84.4.-) - pathological fracture due to osteoporosis (M80.-) - traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)

**Excludes2:** - personal history of (healed) stress (fatigue) fracture (Z87.312) - stress fracture of vertebra (M48.4-)

**Use additional code:** - external cause code(s) to identify the cause of the stress fracture

**7th character note:** - The appropriate 7th character is to be added to each code from subcategory M84.3:

**7th character:** - A: initial encounter for fracture - D: subsequent encounter for fracture with routine healing - G: subsequent encounter for fracture with delayed healing - K: subsequent encounter for fracture with nonunion - P: subsequent encounter for fracture with malunion - S: sequela