ICD-10-CM Code M18.5

Other unilateral secondary osteoarthritis of first carpometacarpal joint

  1. ICD-10-CM Index
  2. Chapter: M00–M99
  3. Section: M15-M19
  4. Block: M18
  5. M18.5 - Oth unil secondary osteoarth of first carpometacarp joint
Version 2020 Non-Billable Code

Not Valid for Submission

M18.5 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other unilateral secondary osteoarthritis of first carpometacarpal joint. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:M18.5
Short Description:Oth unil secondary osteoarth of first carpometacarp joint
Long Description:Other unilateral secondary osteoarthritis of first carpometacarpal joint

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

  • M18.50 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand
  • M18.51 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand
  • M18.52 - Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand

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 M18.5:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Secondary osteoarthritis of first carpometacarpal joint NOS

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code M18.5 are found in the index:


Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Osteoarthritis (M15-M19)
      • Osteoarthritis of first carpometacarpal joint (M18)

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


Osteoarthritis

Osteoarthritis is the most common form of arthritis. It causes pain, swelling, and reduced motion in your joints. It can occur in any joint, but usually it affects your hands, knees, hips or spine.

Osteoarthritis breaks down the cartilage in your joints. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage absorbs the shock of movement. When you lose cartilage, your bones rub together. Over time, this rubbing can permanently damage the joint.

Risk factors for osteoarthritis include

  • Being overweight
  • Getting older
  • Injuring a joint

No single test can diagnose osteoarthritis. Most doctors use several methods, including medical history, a physical exam, x-rays, or lab tests.

Treatments include exercise, medicines, and sometimes surgery.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


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Previous Code: M18.4

Related Codes

Next Code: M18.50