Acquired shortening of the Achilles tendon at the left ankle, classified as a non-traumatic soft tissue disorder under ICD-10-CM category M67.0.

Documentation tips

What should appear in the chart to support M67.02.

Source · Editorial brief grounded in 4 cited references ↓

• Explicitly state 'left' ankle in the assessment — 'short Achilles tendon' without laterality forces a drop to M67.00 (unspecified).
• Document that the condition is acquired, not congenital; note the clinical history (e.g., prior immobilization, neurologic spasticity, scarring) that supports a post-natal onset.
• Record objective ankle dorsiflexion measurements (e.g., Silfverskiöld test result, goniometric ROM) to substantiate the contracture finding in the chart.
• If imaging or ultrasound was obtained, include findings describing tendon morphology or heel cord length to reinforce medical necessity.
• If conservative care was attempted (stretching, orthotics, serial casting), document the course and outcome to support surgical intervention if planned.

Related CPT procedures

Procedure codes commonly billed with M67.02. 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 M67.02 and adjacent codes.

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

• Using M67.00 (unspecified ankle) when the provider clearly documented the left side — always capture the laterality the provider specifies.
• Coding M67.02 alongside a tendinitis NOS code (M77.9) for the same ankle encounter — M77.9 is under the Excludes1 note for category M67 and cannot be used concurrently.
• Confusing acquired shortening (M67.02) with Achilles tendinitis or tendinopathy — contracture/shortening and active inflammation are distinct diagnoses with different code families.
• Assuming M67.00 covers bilateral disease — it codes only unspecified laterality; bilateral involvement requires coding both M67.01 and M67.02 with appropriate sequencing.

Clinical context

Source · Editorial summary grounded in 4 cited references ↓

Sibling codes

Other billable codes under M67.0 (laterality / anatomic variants).