ICD-10-CM Diagnosis Code (2025)
Official Description for M65
Synovitis and tenosynovitis
Coding Notes & Guidelines for M65
Excludes1: Not Coded Here
- chronic crepitant synovitis of hand and wrist (M70.0-)
- current injury - see injury of ligament or tendon by body region
- soft tissue disorders related to use, overuse and pressure (M70.-)
Excludes1: Not Coded Here
- tendinitis as classified in M75-M77
- calcified tendinitis of shoulder (M75.3)
Use Additional Code
code (B95-B96) to identify bacterial agent.
Inclusion Terms
Nodular tendinous disease
Child Codes (More Specific Codes for M65):
M65.0 - Abscess of tendon sheath
M65.00 - Abscess of tendon sheath, unspecified site
M65.01 - Abscess of tendon sheath, shoulder
M65.011 - Abscess of tendon sheath, right shoulder
M65.012 - Abscess of tendon sheath, left shoulder
M65.019 - Abscess of tendon sheath, unspecified shoulder
M65.02 - Abscess of tendon sheath, upper arm
M65.021 - Abscess of tendon sheath, right upper arm
M65.022 - Abscess of tendon sheath, left upper arm
M65.029 - Abscess of tendon sheath, unspecified upper arm
M65.03 - Abscess of tendon sheath, forearm
M65.031 - Abscess of tendon sheath, right forearm
M65.032 - Abscess of tendon sheath, left forearm
M65.039 - Abscess of tendon sheath, unspecified forearm
M65.04 - Abscess of tendon sheath, hand
M65.041 - Abscess of tendon sheath, right hand
M65.042 - Abscess of tendon sheath, left hand
M65.049 - Abscess of tendon sheath, unspecified hand
M65.05 - Abscess of tendon sheath, thigh
M65.051 - Abscess of tendon sheath, right thigh
M65.052 - Abscess of tendon sheath, left thigh
M65.059 - Abscess of tendon sheath, unspecified thigh
M65.06 - Abscess of tendon sheath, lower leg
M65.061 - Abscess of tendon sheath, right lower leg
M65.062 - Abscess of tendon sheath, left lower leg
M65.069 - Abscess of tendon sheath, unspecified lower leg
M65.07 - Abscess of tendon sheath, ankle and foot
M65.071 - Abscess of tendon sheath, right ankle and foot
M65.072 - Abscess of tendon sheath, left ankle and foot
M65.079 - Abscess of tendon sheath, unspecified ankle and foot
M65.08 - Abscess of tendon sheath, other site
M65.1 - Other infective (teno)synovitis
M65.10 - Other infective (teno)synovitis, unspecified site
M65.11 - Other infective (teno)synovitis, shoulder
M65.111 - Other infective (teno)synovitis, right shoulder
M65.112 - Other infective (teno)synovitis, left shoulder
M65.119 - Other infective (teno)synovitis, unspecified shoulder
M65.12 - Other infective (teno)synovitis, elbow
M65.121 - Other infective (teno)synovitis, right elbow
M65.122 - Other infective (teno)synovitis, left elbow
M65.129 - Other infective (teno)synovitis, unspecified elbow
M65.13 - Other infective (teno)synovitis, wrist
M65.131 - Other infective (teno)synovitis, right wrist
M65.132 - Other infective (teno)synovitis, left wrist
M65.139 - Other infective (teno)synovitis, unspecified wrist
M65.14 - Other infective (teno)synovitis, hand
M65.141 - Other infective (teno)synovitis, right hand
M65.142 - Other infective (teno)synovitis, left hand
M65.149 - Other infective (teno)synovitis, unspecified hand
M65.15 - Other infective (teno)synovitis, hip
M65.151 - Other infective (teno)synovitis, right hip
M65.152 - Other infective (teno)synovitis, left hip
M65.159 - Other infective (teno)synovitis, unspecified hip
M65.16 - Other infective (teno)synovitis, knee
M65.161 - Other infective (teno)synovitis, right knee
M65.162 - Other infective (teno)synovitis, left knee
M65.169 - Other infective (teno)synovitis, unspecified knee
M65.17 - Other infective (teno)synovitis, ankle and foot
M65.171 - Other infective (teno)synovitis, right ankle and foot
M65.172 - Other infective (teno)synovitis, left ankle and foot
M65.179 - Other infective (teno)synovitis, unspecified ankle and foot
M65.18 - Other infective (teno)synovitis, other site
M65.19 - Other infective (teno)synovitis, multiple sites
M65.2 - Calcific tendinitis
M65.20 - Calcific tendinitis, unspecified site
M65.22 - Calcific tendinitis, upper arm
M65.221 - Calcific tendinitis, right upper arm
M65.222 - Calcific tendinitis, left upper arm
M65.229 - Calcific tendinitis, unspecified upper arm
M65.23 - Calcific tendinitis, forearm
M65.231 - Calcific tendinitis, right forearm
M65.232 - Calcific tendinitis, left forearm
M65.239 - Calcific tendinitis, unspecified forearm
M65.24 - Calcific tendinitis, hand
M65.241 - Calcific tendinitis, right hand
M65.242 - Calcific tendinitis, left hand
M65.249 - Calcific tendinitis, unspecified hand
M65.25 - Calcific tendinitis, thigh
M65.251 - Calcific tendinitis, right thigh
M65.252 - Calcific tendinitis, left thigh
M65.259 - Calcific tendinitis, unspecified thigh
M65.26 - Calcific tendinitis, lower leg
M65.261 - Calcific tendinitis, right lower leg
M65.262 - Calcific tendinitis, left lower leg
M65.269 - Calcific tendinitis, unspecified lower leg
M65.27 - Calcific tendinitis, ankle and foot
M65.271 - Calcific tendinitis, right ankle and foot
M65.272 - Calcific tendinitis, left ankle and foot
M65.279 - Calcific tendinitis, unspecified ankle and foot
M65.28 - Calcific tendinitis, other site
M65.29 - Calcific tendinitis, multiple sites
M65.3 - Trigger finger
M65.30 - Trigger finger, unspecified finger
M65.31 - Trigger thumb
M65.311 - Trigger thumb, right thumb
M65.312 - Trigger thumb, left thumb
M65.319 - Trigger thumb, unspecified thumb
M65.32 - Trigger finger, index finger
M65.321 - Trigger finger, right index finger
M65.322 - Trigger finger, left index finger
M65.329 - Trigger finger, unspecified index finger
M65.33 - Trigger finger, middle finger
M65.331 - Trigger finger, right middle finger
M65.332 - Trigger finger, left middle finger
M65.339 - Trigger finger, unspecified middle finger
M65.34 - Trigger finger, ring finger
M65.341 - Trigger finger, right ring finger
M65.342 - Trigger finger, left ring finger
M65.349 - Trigger finger, unspecified ring finger
M65.35 - Trigger finger, little finger
M65.351 - Trigger finger, right little finger
M65.352 - Trigger finger, left little finger
M65.359 - Trigger finger, unspecified little finger
M65.4 - Radial styloid tenosynovitis [de Quervain]
M65.8 - Other synovitis and tenosynovitis
M65.80 - Other synovitis and tenosynovitis, unspecified site
M65.81 - Other synovitis and tenosynovitis, shoulder
M65.811 - Other synovitis and tenosynovitis, right shoulder
M65.812 - Other synovitis and tenosynovitis, left shoulder
M65.819 - Other synovitis and tenosynovitis, unspecified shoulder
M65.82 - Other synovitis and tenosynovitis, upper arm
M65.821 - Other synovitis and tenosynovitis, right upper arm
M65.822 - Other synovitis and tenosynovitis, left upper arm
M65.829 - Other synovitis and tenosynovitis, unspecified upper arm
M65.83 - Other synovitis and tenosynovitis, forearm
M65.831 - Other synovitis and tenosynovitis, right forearm
M65.832 - Other synovitis and tenosynovitis, left forearm
M65.839 - Other synovitis and tenosynovitis, unspecified forearm
M65.84 - Other synovitis and tenosynovitis, hand
M65.841 - Other synovitis and tenosynovitis, right hand
M65.842 - Other synovitis and tenosynovitis, left hand
M65.849 - Other synovitis and tenosynovitis, unspecified hand
M65.85 - Other synovitis and tenosynovitis, thigh
M65.851 - Other synovitis and tenosynovitis, right thigh
M65.852 - Other synovitis and tenosynovitis, left thigh
M65.859 - Other synovitis and tenosynovitis, unspecified thigh
M65.86 - Other synovitis and tenosynovitis, lower leg
M65.861 - Other synovitis and tenosynovitis, right lower leg
M65.862 - Other synovitis and tenosynovitis, left lower leg
M65.869 - Other synovitis and tenosynovitis, unspecified lower leg
M65.87 - Other synovitis and tenosynovitis, ankle and foot
M65.871 - Other synovitis and tenosynovitis, right ankle and foot
M65.872 - Other synovitis and tenosynovitis, left ankle and foot
M65.879 - Other synovitis and tenosynovitis, unspecified ankle and foot
M65.88 - Other synovitis and tenosynovitis, other site
M65.89 - Other synovitis and tenosynovitis, multiple sites
M65.9 - Synovitis and tenosynovitis, unspecified
M65.90 - Unspecified synovitis and tenosynovitis, unspecified site
M65.91 - Unspecified synovitis and tenosynovitis, shoulder
M65.911 - Unspecified synovitis and tenosynovitis, right shoulder
M65.912 - Unspecified synovitis and tenosynovitis, left shoulder
M65.919 - Unspecified synovitis and tenosynovitis, unspecified shoulder
M65.92 - Unspecified synovitis and tenosynovitis, upper arm
M65.921 - Unspecified synovitis and tenosynovitis, right upper arm
M65.922 - Unspecified synovitis and tenosynovitis, left upper arm
M65.929 - Unspecified synovitis and tenosynovitis, unspecified upper arm
M65.93 - Unspecified synovitis and tenosynovitis, forearm
M65.931 - Unspecified synovitis and tenosynovitis, right forearm
M65.932 - Unspecified synovitis and tenosynovitis, left forearm
M65.939 - Unspecified synovitis and tenosynovitis, unspecified forearm
M65.94 - Unspecified synovitis and tenosynovitis, hand
M65.941 - Unspecified synovitis and tenosynovitis, right hand
M65.942 - Unspecified synovitis and tenosynovitis, left hand
M65.949 - Unspecified synovitis and tenosynovitis, unspecified hand
M65.95 - Unspecified synovitis and tenosynovitis, thigh
M65.951 - Unspecified synovitis and tenosynovitis, right thigh
M65.952 - Unspecified synovitis and tenosynovitis, left thigh
M65.959 - Unspecified synovitis and tenosynovitis, unspecified thigh
M65.96 - Unspecified synovitis and tenosynovitis, lower leg
M65.961 - Unspecified synovitis and tenosynovitis, right lower leg
M65.962 - Unspecified synovitis and tenosynovitis, left lower leg
M65.969 - Unspecified synovitis and tenosynovitis, unspecified lower leg
M65.97 - Unspecified synovitis and tenosynovitis, ankle and foot
M65.971 - Unspecified synovitis and tenosynovitis, right ankle and foot
M65.972 - Unspecified synovitis and tenosynovitis, left ankle and foot
M65.979 - Unspecified synovitis and tenosynovitis, unspecified ankle and foot
M65.98 - Unspecified synovitis and tenosynovitis, other site
M65.99 - Unspecified synovitis and tenosynovitis, multiple sites
About ICD-10-CM Code M65 (Synovitis and tenosynovitis)
ICD-10-CM code M65 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M65 became effective on October 1, 2024.
This page provides detailed information about M65 - Synovitis and tenosynovitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Synovitis and tenosynovitis.