M9901 - Dysfunction of the joints and muscles in the neck area

International Classification of Diseases

Last updated: 10/3/2025

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code describes a condition where the joints, muscles, and other soft tissues in the cervical spine (neck region) are not functioning properly. This can involve problems with how the vertebrae move together, muscle tension or weakness, and issues with the surrounding tissues. The dysfunction may cause pain, stiffness, reduced range of motion, or other symptoms in the neck area. This is typically diagnosed through physical examination and may be related to injury, poor posture, or other factors affecting the neck's normal function.

Additional Information

This is a functional diagnosis often used in osteopathic and chiropractic medicine. Treatment typically focuses on restoring normal movement and function to the affected area.

Category

Musculoskeletal disorders

Medical Specialty

Orthopedics, Physical Medicine & Rehabilitation, Chiropractic

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Physical examination
  • Medical history assessment

What to Expect After

  • Physical therapy
  • Follow-up appointments
  • Home exercise programs
  • Ergonomic modifications

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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