Pathological fracture, unspecified toe(s)

• 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

traumatic fracture of bone-see fracture, by site

• Chronic fracture
• Pathological fracture NOS

• collapsed vertebra NEC (M48.5)
• pathological fracture in neoplastic disease (M84.5-)
• pathological fracture in osteoporosis (M80.-)
• pathological fracture in other disease (M84.6-)
• stress fracture (M84.3-)
• traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)

personal history of (healed) pathological fracture (Z87.311)

The appropriate 7th character is to be added to each code from subcategory M84.4: