M92.60 captures juvenile osteochondrosis affecting the tarsal bones when the affected ankle is not specified as right or left in the documentation.

Documentation tips

What should appear in the chart to support M92.60.

Source · Editorial brief grounded in 5 cited references ↓

• Specify laterality by name (right or left ankle) in every encounter note — this upgrades M92.60 to the more specific M92.61 or M92.62 and reduces audit exposure.
• Identify the named eponymous syndrome where possible (Sever's, Köhler's, Diaz, Haglund's) so the clinical record corroborates the tarsal-specific diagnosis under M92.6.
• Record the patient's age and skeletal maturity status; juvenile osteochondrosis codes require that the patient be skeletally immature — open growth plates on imaging support this.
• Document imaging findings: plain radiograph findings (fragmentation, sclerosis, flattening of the involved ossification center) or MRI signal changes that confirm avascular necrosis of the tarsal bone.
• Note any prior conservative treatment (activity restriction, casting, orthotic use) if surgical intervention is being considered, as this supports medical necessity for procedural claims.

Related CPT procedures

Procedure codes commonly billed with M92.60. Linking the right diagnosis to the right procedure is what establishes medical necessity.

Source · CMS LCDs · AAOS specialty guidance · claims-pattern analysis

Common coding pitfalls

The recurring mistakes coders make with M92.60 and adjacent codes.

Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓

• Defaulting to M92.60 when laterality is clearly documented in the note — always use M92.61 (right) or M92.62 (left) if the ankle is named.
• Billing the non-billable parent code M92.6 instead of a valid 6th-character code; M92.6 will reject on claims — M92.60, M92.61, or M92.62 are the only billable options in this subcategory.
• Confusing Haglund's deformity (a bony prominence of the posterior calcaneus, often coded with M77.3x or M89.8X7) with Haglund's osteochondrosis (os tibiale externum involvement), which maps to M92.6x.
• Using an adult osteoarthritis or degenerative code (e.g., M19.07x) for a skeletally immature patient with tarsal pain — confirm open physes before assigning a juvenile osteochondrosis code.
• Forgetting to exclude postprocedural chondropathy scenarios, which require codes from M96.- rather than M92.6x.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

Sibling codes

Other billable codes under M92.6 (laterality / anatomic variants).