2020 ICD-10-CM Diagnosis Code M25.4

Effusion of joint

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • M25.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM M25.4 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M25.4 - other international versions of ICD-10 M25.4 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as M25.4. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • hydrarthrosis in yaws (
    ICD-10-CM Diagnosis Code A66.6

    Bone and joint lesions of yaws

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Yaws ganglion
    • Yaws goundou
    • Yaws gumma, bone
    • Yaws gummatous osteitis or periostitis
    • Yaws hydrarthrosis
    • Yaws osteitis
    • Yaws periostitis (hypertrophic)
  • intermittent hydrarthrosis (
    ICD-10-CM Diagnosis Code M12.4

    Intermittent hydrarthrosis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • other infective (teno)synovitis (
    ICD-10-CM Diagnosis Code M65.1

    Other infective (teno)synovitis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
The following code(s) above M25.4 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 M25.4:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    • 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
  • M20-M25
    2020 ICD-10-CM Range M20-M25

    Other joint disorders

    Type 2 Excludes
    Other joint disorders
  • M25
    ICD-10-CM Diagnosis Code M25

    Other joint disorder, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • abnormality of gait and mobility (R26.-)
    • acquired deformities of limb (M20-M21)
    • calcification of bursa (M71.4-)
    • calcification of shoulder (joint) (M75.3)
    • calcification of tendon (M65.2-)
    • difficulty in walking (R26.2)
    • temporomandibular joint disorder (M26.6-)
    Other joint disorder, not elsewhere classified
Clinical Information
  • A disorder characterized by excessive fluid in a joint, usually as a result of joint inflammation.
  • Abnormally increased amount of fluid in a joint cavity, usually as a result of joint inflammation.
  • Accumulation of watery fluid in the cavity of a joint. (Dorland, 27th ed)
  • Pathological transudate in the synovial cavity of joints.
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
Code annotations containing back-references to M25.4:
  • Type 1 Excludes: R22
    ICD-10-CM Diagnosis Code R22

    Localized swelling, mass and lump of skin and subcutaneous tissue

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    • subcutaneous nodules (localized)(superficial)
    Type 1 Excludes
    • abnormal findings on diagnostic imaging (R90-R93)
    • edema (R60.-)
    • enlarged lymph nodes (R59.-)
    • localized adiposity (E65)
    • swelling of joint (M25.4-)
ICD-10-CM Codes Adjacent To M25.4
M25.361 Other instability, right knee
M25.362 Other instability, left knee
M25.369 Other instability, unspecified knee
M25.37 Other instability, ankle and foot
M25.371 Other instability, right ankle
M25.372 Other instability, left ankle
M25.373 Other instability, unspecified ankle
M25.374 Other instability, right foot
M25.375 Other instability, left foot
M25.376 Other instability, unspecified foot
M25.4 Effusion of joint
M25.40 Effusion, unspecified joint
M25.41 Effusion, shoulder
M25.411 Effusion, right shoulder
M25.412 Effusion, left shoulder
M25.419 Effusion, unspecified shoulder
M25.42 Effusion, elbow
M25.421 Effusion, right elbow
M25.422 Effusion, left elbow
M25.429 Effusion, unspecified elbow
M25.43 Effusion, wrist

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