Other synovitis and tenosynovitis
Other synovitis and tenosynovitis
M65.8 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
M65.80 identifies inflammation of a synovial membrane, tendon sheath, or both — classified as 'other' synovitis/tenosynovitis — when the anatomical site is not documented or cannot be specified.
Synovitis or tenosynovitis affecting a body site that does not correspond to any of the named anatomical locations in the M65.8x series — assigned when the involved joint or tendon sheath falls outside the shoulder, upper arm, forearm, hand, thigh, lower leg, and ankle/foot classifications.
Inflammation of the synovial lining of joints or tendon sheaths occurring at more than one anatomical site, where the condition does not fit a more specific M65 subcategory.