ICD-10-CM Code M66

Spontaneous rupture of synovium and tendon

Version 2020 Non-Billable Code

Not Valid for Submission

M66 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of spontaneous rupture of synovium and tendon. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:M66
Short Description:Spontaneous rupture of synovium and tendon
Long Description:Spontaneous rupture of synovium and tendon

Consider the following ICD-10 codes with a higher level of specificity:

  • M66.0 - Rupture of popliteal cyst
  • M66.1 - Rupture of synovium
  • M66.10 - Rupture of synovium, unspecified joint
  • M66.11 - Rupture of synovium, shoulder
  • M66.111 - Rupture of synovium, right shoulder
  • M66.112 - Rupture of synovium, left shoulder
  • M66.119 - Rupture of synovium, unspecified shoulder
  • M66.12 - Rupture of synovium, elbow
  • M66.121 - Rupture of synovium, right elbow
  • M66.122 - Rupture of synovium, left elbow
  • M66.129 - Rupture of synovium, unspecified elbow
  • M66.13 - Rupture of synovium, wrist
  • M66.131 - Rupture of synovium, right wrist
  • M66.132 - Rupture of synovium, left wrist
  • M66.139 - Rupture of synovium, unspecified wrist
  • M66.14 - Rupture of synovium, hand and fingers
  • M66.141 - Rupture of synovium, right hand
  • M66.142 - Rupture of synovium, left hand
  • M66.143 - Rupture of synovium, unspecified hand
  • M66.144 - Rupture of synovium, right finger(s)
  • M66.145 - Rupture of synovium, left finger(s)
  • M66.146 - Rupture of synovium, unspecified finger(s)
  • M66.15 - Rupture of synovium, hip
  • M66.151 - Rupture of synovium, right hip
  • M66.152 - Rupture of synovium, left hip
  • M66.159 - Rupture of synovium, unspecified hip
  • M66.17 - Rupture of synovium, ankle, foot and toes
  • M66.171 - Rupture of synovium, right ankle
  • M66.172 - Rupture of synovium, left ankle
  • M66.173 - Rupture of synovium, unspecified ankle
  • M66.174 - Rupture of synovium, right foot
  • M66.175 - Rupture of synovium, left foot
  • M66.176 - Rupture of synovium, unspecified foot
  • M66.177 - Rupture of synovium, right toe(s)
  • M66.178 - Rupture of synovium, left toe(s)
  • M66.179 - Rupture of synovium, unspecified toe(s)
  • M66.18 - Rupture of synovium, other site
  • M66.2 - Spontaneous rupture of extensor tendons
  • M66.20 - Spontaneous rupture of extensor tendons, unspecified site
  • M66.21 - Spontaneous rupture of extensor tendons, shoulder
  • M66.211 - Spontaneous rupture of extensor tendons, right shoulder
  • M66.212 - Spontaneous rupture of extensor tendons, left shoulder
  • M66.219 - Spontaneous rupture of extensor tendons, unspecified shoulder
  • M66.22 - Spontaneous rupture of extensor tendons, upper arm
  • M66.221 - Spontaneous rupture of extensor tendons, right upper arm
  • M66.222 - Spontaneous rupture of extensor tendons, left upper arm
  • M66.229 - Spontaneous rupture of extensor tendons, unspecified upper arm
  • M66.23 - Spontaneous rupture of extensor tendons, forearm
  • M66.231 - Spontaneous rupture of extensor tendons, right forearm
  • M66.232 - Spontaneous rupture of extensor tendons, left forearm
  • M66.239 - Spontaneous rupture of extensor tendons, unspecified forearm
  • M66.24 - Spontaneous rupture of extensor tendons, hand
  • M66.241 - Spontaneous rupture of extensor tendons, right hand
  • M66.242 - Spontaneous rupture of extensor tendons, left hand
  • M66.249 - Spontaneous rupture of extensor tendons, unspecified hand
  • M66.25 - Spontaneous rupture of extensor tendons, thigh
  • M66.251 - Spontaneous rupture of extensor tendons, right thigh
  • M66.252 - Spontaneous rupture of extensor tendons, left thigh
  • M66.259 - Spontaneous rupture of extensor tendons, unspecified thigh
  • M66.26 - Spontaneous rupture of extensor tendons, lower leg
  • M66.261 - Spontaneous rupture of extensor tendons, right lower leg
  • M66.262 - Spontaneous rupture of extensor tendons, left lower leg
  • M66.269 - Spontaneous rupture of extensor tendons, unspecified lower leg
  • M66.27 - Spontaneous rupture of extensor tendons, ankle and foot
  • M66.271 - Spontaneous rupture of extensor tendons, right ankle and foot
  • M66.272 - Spontaneous rupture of extensor tendons, left ankle and foot
  • M66.279 - Spontaneous rupture of extensor tendons, unspecified ankle and foot
  • M66.28 - Spontaneous rupture of extensor tendons, other site
  • M66.29 - Spontaneous rupture of extensor tendons, multiple sites
  • M66.3 - Spontaneous rupture of flexor tendons
  • M66.30 - Spontaneous rupture of flexor tendons, unspecified site
  • M66.31 - Spontaneous rupture of flexor tendons, shoulder
  • M66.311 - Spontaneous rupture of flexor tendons, right shoulder
  • M66.312 - Spontaneous rupture of flexor tendons, left shoulder
  • M66.319 - Spontaneous rupture of flexor tendons, unspecified shoulder
  • M66.32 - Spontaneous rupture of flexor tendons, upper arm
  • M66.321 - Spontaneous rupture of flexor tendons, right upper arm
  • M66.322 - Spontaneous rupture of flexor tendons, left upper arm
  • M66.329 - Spontaneous rupture of flexor tendons, unspecified upper arm
  • M66.33 - Spontaneous rupture of flexor tendons, forearm
  • M66.331 - Spontaneous rupture of flexor tendons, right forearm
  • M66.332 - Spontaneous rupture of flexor tendons, left forearm
  • M66.339 - Spontaneous rupture of flexor tendons, unspecified forearm
  • M66.34 - Spontaneous rupture of flexor tendons, hand
  • M66.341 - Spontaneous rupture of flexor tendons, right hand
  • M66.342 - Spontaneous rupture of flexor tendons, left hand
  • M66.349 - Spontaneous rupture of flexor tendons, unspecified hand
  • M66.35 - Spontaneous rupture of flexor tendons, thigh
  • M66.351 - Spontaneous rupture of flexor tendons, right thigh
  • M66.352 - Spontaneous rupture of flexor tendons, left thigh
  • M66.359 - Spontaneous rupture of flexor tendons, unspecified thigh
  • M66.36 - Spontaneous rupture of flexor tendons, lower leg
  • M66.361 - Spontaneous rupture of flexor tendons, right lower leg
  • M66.362 - Spontaneous rupture of flexor tendons, left lower leg
  • M66.369 - Spontaneous rupture of flexor tendons, unspecified lower leg
  • M66.37 - Spontaneous rupture of flexor tendons, ankle and foot
  • M66.371 - Spontaneous rupture of flexor tendons, right ankle and foot
  • M66.372 - Spontaneous rupture of flexor tendons, left ankle and foot
  • M66.379 - Spontaneous rupture of flexor tendons, unspecified ankle and foot
  • M66.38 - Spontaneous rupture of flexor tendons, other site
  • M66.39 - Spontaneous rupture of flexor tendons, multiple sites
  • M66.8 - Spontaneous rupture of other tendons
  • M66.80 - Spontaneous rupture of other tendons, unspecified site
  • M66.81 - Spontaneous rupture of other tendons, shoulder
  • M66.811 - Spontaneous rupture of other tendons, right shoulder
  • M66.812 - Spontaneous rupture of other tendons, left shoulder
  • M66.819 - Spontaneous rupture of other tendons, unspecified shoulder
  • M66.82 - Spontaneous rupture of other tendons, upper arm
  • M66.821 - Spontaneous rupture of other tendons, right upper arm
  • M66.822 - Spontaneous rupture of other tendons, left upper arm
  • M66.829 - Spontaneous rupture of other tendons, unspecified upper arm
  • M66.83 - Spontaneous rupture of other tendons, forearm
  • M66.831 - Spontaneous rupture of other tendons, right forearm
  • M66.832 - Spontaneous rupture of other tendons, left forearm
  • M66.839 - Spontaneous rupture of other tendons, unspecified forearm
  • M66.84 - Spontaneous rupture of other tendons, hand
  • M66.841 - Spontaneous rupture of other tendons, right hand
  • M66.842 - Spontaneous rupture of other tendons, left hand
  • M66.849 - Spontaneous rupture of other tendons, unspecified hand
  • M66.85 - Spontaneous rupture of other tendons, thigh
  • M66.851 - Spontaneous rupture of other tendons, right thigh
  • M66.852 - Spontaneous rupture of other tendons, left thigh
  • M66.859 - Spontaneous rupture of other tendons, unspecified thigh
  • M66.86 - Spontaneous rupture of other tendons, lower leg
  • M66.861 - Spontaneous rupture of other tendons, right lower leg
  • M66.862 - Spontaneous rupture of other tendons, left lower leg
  • M66.869 - Spontaneous rupture of other tendons, unspecified lower leg
  • M66.87 - Spontaneous rupture of other tendons, ankle and foot
  • M66.871 - Spontaneous rupture of other tendons, right ankle and foot
  • M66.872 - Spontaneous rupture of other tendons, left ankle and foot
  • M66.879 - Spontaneous rupture of other tendons, unspecified ankle and foot
  • M66.88 - Spontaneous rupture of other tendons, other sites
  • M66.89 - Spontaneous rupture of other tendons, multiple sites
  • M66.9 - Spontaneous rupture of unspecified tendon

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code M66:

Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • rotator cuff syndrome M75.1
  • rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Disorders of synovium and tendon (M65-M67)
      • Spontaneous rupture of synovium and tendon (M66)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Joint Disorders

A joint is where two or more bones come together, like the knee, hip, elbow, or shoulder. Joints can be damaged by many types of injuries or diseases, including

  • Arthritis - inflammation of a joint. It causes pain, stiffness, and swelling. Over time, the joint can become severely damaged.
  • Bursitis - inflammation of a fluid-filled sac that cushions the joint
  • Dislocations - injuries that force the ends of the bones out of position

Treatment of joint problems depends on the cause. If you have a sports injury, treatment often begins with the RICE (Rest, Ice, Compression, and Elevation) method to relieve pain, reduce swelling, and speed healing. Other possible treatments include pain relievers, keeping the injured area from moving, rehabilitation, and sometimes surgery. For arthritis, injuries, or other diseases, you may need joint replacement surgery to remove the damaged joint and put in a new one.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


[Learn More]

Tendinitis

Tendons are flexible bands of tissue that connect muscles to bones. They help your muscles move your bones. Tendinitis is the severe swelling of a tendon.

Tendinitis usually happens after repeated injury to an area such as the wrist or ankle. It causes pain and soreness around a joint. Some common forms of tendinitis are named after the sports that increase their risk. They include tennis elbow, golfer's elbow, pitcher's shoulder, swimmer's shoulder, and jumper's knee.

Doctors diagnose tendinitis with your medical history, a physical exam, and imaging tests. The first step in treatment is to reduce pain and swelling. Rest, wrapping or elevating the affected area, and medicines can help. Ice is helpful for recent, severe injuries. Other treatments include ultrasound, physical therapy, steroid injections, and surgery.


[Learn More]