ICD-10-CM Code M12.421

Intermittent hydrarthrosis, right elbow

  1. ICD-10-CM Index
  2. Chapter: M00–M99
  3. Section: M05-M14
  4. Block: M12
  5. M12.421 - Intermittent hydrarthrosis, right elbow
Version 2020 Billable Code

Valid for Submission

M12.421 is a billable code used to specify a medical diagnosis of intermittent hydrarthrosis, right elbow. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:M12.421
Short Description:Intermittent hydrarthrosis, right elbow
Long Description:Intermittent hydrarthrosis, right elbow

Diagnostic Related Groups

The ICD-10 code M12.421 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2020 through 09/30/2020.

  • 553 - BONE DISEASES AND ARTHROPATHIES WITH MCC
  • 554 - BONE DISEASES AND ARTHROPATHIES WITHOUT MCC

Convert M12.421 to ICD-9

  • 719.32 - Palindrom rheum-up/arm (Approximate Flag)

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Inflammatory polyarthropathies (M05-M14)
      • Other and unspecified arthropathy (M12)

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


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