M87.235

Billable

Osteonecrosis due to previous trauma of left ulna

HCC Category Mapping

V28HCC 92 — Bone/Joint/Muscle Infections/Necrosis

0.209

V24HCC 39 — Bone/Joint/Muscle Infections/Necrosis

0.482

ESRDHCC 39 — Bone/Joint/Muscle Infections/Necrosis

0.000

RxHCCHCC 80 — Bone/Joint/Muscle Infections/Necrosis

0.000

What This Code Means

Death of bone tissue in the left forearm bone (ulna) resulting from a previous injury.

Coding Tips

•Confirm left ulna involvement in the medical record before coding
•Consider imaging findings that support the diagnosis of osteonecrosis

Clinical Significance

Left ulna post-traumatic osteonecrosis significantly impacts forearm biomechanics and may affect the dominant extremity in most patients. This condition represents failed bone healing requiring intensive management to preserve function and prevent progressive collapse.

Documentation Requirements

✓Clear documentation of previous trauma to the left ulna
✓Radiological confirmation of osteonecrosis in left ulna
✓Clinical evidence of left forearm/elbow dysfunction
✓Exclusion of non-traumatic causes of bone necrosis
✓Documentation of symptoms such as pain or stiffness
✓Provider correlation between past injury and current pathology
✓Evidence of compromised bone viability through imaging
✓Assessment of functional impact on daily activities

Commonly Confused Codes

M87.035 — Idiopathic osteonecrosis of left ulna (spontaneous onset)S52.602A — Unspecified fracture of lower end of left ulna (acute injury)M86.035 — Acute hematogenous osteomyelitis of left ulna (infection)M87.335 — Other secondary osteonecrosis of left ulna (non-traumatic)M25.522 — Pain in left elbow (symptom without structural damage)

Code Hierarchy

└M87Osteonecrosis └M87.2Osteonecrosis due to previous trauma └M87.23Osteonecrosis due to previous trauma of radius, ulna and carpus └M87.235Osteonecrosis due to previous trauma of left ulna

└M87.235Osteonecrosis due to previous trauma of left ulna