| M65 | Synovitis and tenosynovitis | NON-BILLABLE CODE |
| M65.0 | Abscess of tendon sheath | NON-BILLABLE CODE |
| M65.00 | Abscess of tendon sheath, unspecified site | BILLABLE CODE |
| M65.01 | Abscess of tendon sheath, shoulder | NON-BILLABLE CODE |
| M65.011 | Abscess of tendon sheath, right shoulder | BILLABLE CODE |
| M65.012 | Abscess of tendon sheath, left shoulder | BILLABLE CODE |
| M65.019 | Abscess of tendon sheath, unspecified shoulder | BILLABLE CODE |
| M65.02 | Abscess of tendon sheath, upper arm | NON-BILLABLE CODE |
| M65.021 | Abscess of tendon sheath, right upper arm | BILLABLE CODE |
| M65.022 | Abscess of tendon sheath, left upper arm | BILLABLE CODE |
| M65.029 | Abscess of tendon sheath, unspecified upper arm | BILLABLE CODE |
| M65.03 | Abscess of tendon sheath, forearm | NON-BILLABLE CODE |
| M65.031 | Abscess of tendon sheath, right forearm | BILLABLE CODE |
| M65.032 | Abscess of tendon sheath, left forearm | BILLABLE CODE |
| M65.039 | Abscess of tendon sheath, unspecified forearm | BILLABLE CODE |
| M65.04 | Abscess of tendon sheath, hand | NON-BILLABLE CODE |
| M65.041 | Abscess of tendon sheath, right hand | BILLABLE CODE |
| M65.042 | Abscess of tendon sheath, left hand | BILLABLE CODE |
| M65.049 | Abscess of tendon sheath, unspecified hand | BILLABLE CODE |
| M65.05 | Abscess of tendon sheath, thigh | NON-BILLABLE CODE |
| M65.051 | Abscess of tendon sheath, right thigh | BILLABLE CODE |
| M65.052 | Abscess of tendon sheath, left thigh | BILLABLE CODE |
| M65.059 | Abscess of tendon sheath, unspecified thigh | BILLABLE CODE |
| M65.06 | Abscess of tendon sheath, lower leg | NON-BILLABLE CODE |
| M65.061 | Abscess of tendon sheath, right lower leg | BILLABLE CODE |
| M65.062 | Abscess of tendon sheath, left lower leg | BILLABLE CODE |
| M65.069 | Abscess of tendon sheath, unspecified lower leg | BILLABLE CODE |
| M65.07 | Abscess of tendon sheath, ankle and foot | NON-BILLABLE CODE |
| M65.071 | Abscess of tendon sheath, right ankle and foot | BILLABLE CODE |
| M65.072 | Abscess of tendon sheath, left ankle and foot | BILLABLE CODE |
| M65.079 | Abscess of tendon sheath, unspecified ankle and foot | BILLABLE CODE |
| M65.08 | Abscess of tendon sheath, other site | BILLABLE CODE |
| M65.1 | Other infective (teno)synovitis | NON-BILLABLE CODE |
| M65.10 | Other infective (teno)synovitis, unspecified site | BILLABLE CODE |
| M65.11 | Other infective (teno)synovitis, shoulder | NON-BILLABLE CODE |
| M65.111 | Other infective (teno)synovitis, right shoulder | BILLABLE CODE |
| M65.112 | Other infective (teno)synovitis, left shoulder | BILLABLE CODE |
| M65.119 | Other infective (teno)synovitis, unspecified shoulder | BILLABLE CODE |
| M65.12 | Other infective (teno)synovitis, elbow | NON-BILLABLE CODE |
| M65.121 | Other infective (teno)synovitis, right elbow | BILLABLE CODE |
| M65.122 | Other infective (teno)synovitis, left elbow | BILLABLE CODE |
| M65.129 | Other infective (teno)synovitis, unspecified elbow | BILLABLE CODE |
| M65.13 | Other infective (teno)synovitis, wrist | NON-BILLABLE CODE |
| M65.131 | Other infective (teno)synovitis, right wrist | BILLABLE CODE |
| M65.132 | Other infective (teno)synovitis, left wrist | BILLABLE CODE |
| M65.139 | Other infective (teno)synovitis, unspecified wrist | BILLABLE CODE |
| M65.14 | Other infective (teno)synovitis, hand | NON-BILLABLE CODE |
| M65.141 | Other infective (teno)synovitis, right hand | BILLABLE CODE |
| M65.142 | Other infective (teno)synovitis, left hand | BILLABLE CODE |
| M65.149 | Other infective (teno)synovitis, unspecified hand | BILLABLE CODE |
| M65.15 | Other infective (teno)synovitis, hip | NON-BILLABLE CODE |
| M65.151 | Other infective (teno)synovitis, right hip | BILLABLE CODE |
| M65.152 | Other infective (teno)synovitis, left hip | BILLABLE CODE |
| M65.159 | Other infective (teno)synovitis, unspecified hip | BILLABLE CODE |
| M65.16 | Other infective (teno)synovitis, knee | NON-BILLABLE CODE |
| M65.161 | Other infective (teno)synovitis, right knee | BILLABLE CODE |
| M65.162 | Other infective (teno)synovitis, left knee | BILLABLE CODE |
| M65.169 | Other infective (teno)synovitis, unspecified knee | BILLABLE CODE |
| M65.17 | Other infective (teno)synovitis, ankle and foot | NON-BILLABLE CODE |
| M65.171 | Other infective (teno)synovitis, right ankle and foot | BILLABLE CODE |
| M65.172 | Other infective (teno)synovitis, left ankle and foot | BILLABLE CODE |
| M65.179 | Other infective (teno)synovitis, unspecified ankle and foot | BILLABLE CODE |
| M65.18 | Other infective (teno)synovitis, other site | BILLABLE CODE |
| M65.19 | Other infective (teno)synovitis, multiple sites | BILLABLE CODE |
| M65.2 | Calcific tendinitis | NON-BILLABLE CODE |
| M65.20 | Calcific tendinitis, unspecified site | BILLABLE CODE |
| M65.22 | Calcific tendinitis, upper arm | NON-BILLABLE CODE |
| M65.221 | Calcific tendinitis, right upper arm | BILLABLE CODE |
| M65.222 | Calcific tendinitis, left upper arm | BILLABLE CODE |
| M65.229 | Calcific tendinitis, unspecified upper arm | BILLABLE CODE |
| M65.23 | Calcific tendinitis, forearm | NON-BILLABLE CODE |
| M65.231 | Calcific tendinitis, right forearm | BILLABLE CODE |
| M65.232 | Calcific tendinitis, left forearm | BILLABLE CODE |
| M65.239 | Calcific tendinitis, unspecified forearm | BILLABLE CODE |
| M65.24 | Calcific tendinitis, hand | NON-BILLABLE CODE |
| M65.241 | Calcific tendinitis, right hand | BILLABLE CODE |
| M65.242 | Calcific tendinitis, left hand | BILLABLE CODE |
| M65.249 | Calcific tendinitis, unspecified hand | BILLABLE CODE |
| M65.25 | Calcific tendinitis, thigh | NON-BILLABLE CODE |
| M65.251 | Calcific tendinitis, right thigh | BILLABLE CODE |
| M65.252 | Calcific tendinitis, left thigh | BILLABLE CODE |
| M65.259 | Calcific tendinitis, unspecified thigh | BILLABLE CODE |
| M65.26 | Calcific tendinitis, lower leg | NON-BILLABLE CODE |
| M65.261 | Calcific tendinitis, right lower leg | BILLABLE CODE |
| M65.262 | Calcific tendinitis, left lower leg | BILLABLE CODE |
| M65.269 | Calcific tendinitis, unspecified lower leg | BILLABLE CODE |
| M65.27 | Calcific tendinitis, ankle and foot | NON-BILLABLE CODE |
| M65.271 | Calcific tendinitis, right ankle and foot | BILLABLE CODE |
| M65.272 | Calcific tendinitis, left ankle and foot | BILLABLE CODE |
| M65.279 | Calcific tendinitis, unspecified ankle and foot | BILLABLE CODE |
| M65.28 | Calcific tendinitis, other site | BILLABLE CODE |
| M65.29 | Calcific tendinitis, multiple sites | BILLABLE CODE |
| M65.3 | Trigger finger | NON-BILLABLE CODE |
| M65.30 | Trigger finger, unspecified finger | BILLABLE CODE |
| M65.31 | Trigger thumb | NON-BILLABLE CODE |
| M65.311 | Trigger thumb, right thumb | BILLABLE CODE |
| M65.312 | Trigger thumb, left thumb | BILLABLE CODE |
| M65.319 | Trigger thumb, unspecified thumb | BILLABLE CODE |
| M65.32 | Trigger finger, index finger | NON-BILLABLE CODE |
| M65.321 | Trigger finger, right index finger | BILLABLE CODE |
| M65.322 | Trigger finger, left index finger | BILLABLE CODE |
| M65.329 | Trigger finger, unspecified index finger | BILLABLE CODE |
| M65.33 | Trigger finger, middle finger | NON-BILLABLE CODE |
| M65.331 | Trigger finger, right middle finger | BILLABLE CODE |
| M65.332 | Trigger finger, left middle finger | BILLABLE CODE |
| M65.339 | Trigger finger, unspecified middle finger | BILLABLE CODE |
| M65.34 | Trigger finger, ring finger | NON-BILLABLE CODE |
| M65.341 | Trigger finger, right ring finger | BILLABLE CODE |
| M65.342 | Trigger finger, left ring finger | BILLABLE CODE |
| M65.349 | Trigger finger, unspecified ring finger | BILLABLE CODE |
| M65.35 | Trigger finger, little finger | NON-BILLABLE CODE |
| M65.351 | Trigger finger, right little finger | BILLABLE CODE |
| M65.352 | Trigger finger, left little finger | BILLABLE CODE |
| M65.359 | Trigger finger, unspecified little finger | BILLABLE CODE |
| M65.4 | Radial styloid tenosynovitis [de Quervain] | BILLABLE CODE |
| M65.8 | Other synovitis and tenosynovitis | NON-BILLABLE CODE |
| M65.80 | Other synovitis and tenosynovitis, unspecified site | BILLABLE CODE |
| M65.81 | Other synovitis and tenosynovitis, shoulder | NON-BILLABLE CODE |
| M65.811 | Other synovitis and tenosynovitis, right shoulder | BILLABLE CODE |
| M65.812 | Other synovitis and tenosynovitis, left shoulder | BILLABLE CODE |
| M65.819 | Other synovitis and tenosynovitis, unspecified shoulder | BILLABLE CODE |
| M65.82 | Other synovitis and tenosynovitis, upper arm | NON-BILLABLE CODE |
| M65.821 | Other synovitis and tenosynovitis, right upper arm | BILLABLE CODE |
| M65.822 | Other synovitis and tenosynovitis, left upper arm | BILLABLE CODE |
| M65.829 | Other synovitis and tenosynovitis, unspecified upper arm | BILLABLE CODE |
| M65.83 | Other synovitis and tenosynovitis, forearm | NON-BILLABLE CODE |
| M65.832 | Other synovitis and tenosynovitis, left forearm | BILLABLE CODE |
| M65.839 | Other synovitis and tenosynovitis, unspecified forearm | BILLABLE CODE |
| M65.84 | Other synovitis and tenosynovitis, hand | NON-BILLABLE CODE |
| M65.841 | Other synovitis and tenosynovitis, right hand | BILLABLE CODE |
| M65.842 | Other synovitis and tenosynovitis, left hand | BILLABLE CODE |
| M65.849 | Other synovitis and tenosynovitis, unspecified hand | BILLABLE CODE |
| M65.85 | Other synovitis and tenosynovitis, thigh | NON-BILLABLE CODE |
| M65.851 | Other synovitis and tenosynovitis, right thigh | BILLABLE CODE |
| M65.852 | Other synovitis and tenosynovitis, left thigh | BILLABLE CODE |
| M65.859 | Other synovitis and tenosynovitis, unspecified thigh | BILLABLE CODE |
| M65.86 | Other synovitis and tenosynovitis, lower leg | NON-BILLABLE CODE |
| M65.861 | Other synovitis and tenosynovitis, right lower leg | BILLABLE CODE |
| M65.862 | Other synovitis and tenosynovitis, left lower leg | BILLABLE CODE |
| M65.869 | Other synovitis and tenosynovitis, unspecified lower leg | BILLABLE CODE |
| M65.87 | Other synovitis and tenosynovitis, ankle and foot | NON-BILLABLE CODE |
| M65.871 | Other synovitis and tenosynovitis, right ankle and foot | BILLABLE CODE |
| M65.872 | Other synovitis and tenosynovitis, left ankle and foot | BILLABLE CODE |
| M65.879 | Other synovitis and tenosynovitis, unspecified ankle and foot | BILLABLE CODE |
| M65.88 | Other synovitis and tenosynovitis, other site | BILLABLE CODE |
| M65.89 | Other synovitis and tenosynovitis, multiple sites | BILLABLE CODE |
| M65.9 | Synovitis and tenosynovitis, unspecified | BILLABLE CODE |
