ICD-10-CM 2027
ICD-10 code for posterior tibial syndrome enthesopathy
From the official ICD-10-CM alphabetic index entry “Enthesopathy (peripheral) › posterior tibial syndrome”. Page updated September 29, 2026.
About coding posterior tibial syndrome enthesopathy
The ICD-10-CM code for posterior tibial syndrome enthesopathy is M76.82 (Posterior tibial tendinitis).
Within M76.8 (other specified enthesopathies of lower limb, excluding foot), M76.82 is specifically for posterior tibial tendinitis. Related codes cover anterior tibial syndrome (M76.81) and other specified enthesopathies of lower limb, excluding foot (M76.89).
To report this condition, pick the subcode that matches the documentation: M76.821 (right leg), M76.822 (left leg) and M76.829 (unspecified leg).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.