2020 ICD-10-CM Diagnosis Code M65.18

Other infective (teno)synovitis, other site

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M65.18 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M65.18 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M65.18 - other international versions of ICD-10 M65.18 may differ.
The following code(s) above M65.18 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M65.18:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M65
    ICD-10-CM Diagnosis Code M65

    Synovitis and tenosynovitis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • 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.-)
    Synovitis and tenosynovitis
ICD-10-CM M65.18 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 557 Tendonitis, myositis and bursitis with mcc
  • 558 Tendonitis, myositis and bursitis without mcc

Convert M65.18 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to M65.18:
  • Tenosynovitis M65.9
    - see also Synovitis
    ICD-10-CM Diagnosis Code M65.9

    Synovitis and tenosynovitis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • infective NEC M65.1-
      ICD-10-CM Diagnosis Code M65.1-

      Other infective (teno)synovitis

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • specified site NEC M65.18

ICD-10-CM Codes Adjacent To M65.18
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 site
M65.19 …… multiple sites
M65.2 Calcific tendinitis
M65.20 …… 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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.