M87.877

Billable

Other osteonecrosis, right toe(s)

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 right toe(s) due to causes other than trauma, infection, or radiation. This can cause pain and difficulty walking or wearing shoes.

Coding Tips

•This code is specific to the right toe(s); use M87.878 for left toe(s) or M87.879 for unspecified
•Document which toe(s) are affected if possible, though this code does not differentiate between individual toes

Clinical Significance

Right toe osteonecrosis involves avascular bone death in the toe bones, potentially affecting balance, gait mechanics, and weight distribution during ambulation. Though affecting smaller bones, this condition can significantly impact quality of life and mobility.

Documentation Requirements

✓Specific identification of right toe(s) involvement
✓Imaging confirmation of osteonecrosis in toe bones
✓Documentation excluding trauma, infection, or radiation causes
✓Assessment of impact on gait and balance
✓Pain evaluation and functional limitations
✓Evaluation for predisposing conditions (diabetes, vascular disease)
✓Footwear modification and offloading strategies
✓Monitoring for complications like ulceration or infection

Commonly Confused Codes

M87.377 — Drug-induced osteonecrosis requires causative medication identification M87.177 — Traumatic osteonecrosis needs documented injury history M87.077 — Idiopathic osteonecrosis lacks identifiable underlying cause S92.501A — Toe fracture is acute injury, not chronic bone death L97.911 — Diabetic foot ulcer is soft tissue, not bone pathology

Code Hierarchy

└M87Osteonecrosis └M87.8Other osteonecrosis └M87.87Other osteonecrosis, ankle, foot and toes └M87.877Other osteonecrosis, right toe(s)

└M87.877Other osteonecrosis, right toe(s)