S46012A - Strain of the rotator cuff muscles and tendons in the left shoulder - initial encounter

International Classification of Diseases

Last updated: 3/24/2026

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 represents an injury to the rotator cuff, which is a group of muscles and tendons that surround the shoulder joint and help stabilize it. A strain means these tissues have been stretched or torn, typically from overuse, sudden movement, or trauma. This is the first time this particular injury is being treated or diagnosed. The rotator cuff is essential for shoulder movement and stability, and strains can cause pain, weakness, and limited range of motion in the affected shoulder.

Additional Information

This is an initial encounter code, meaning it's used for the first treatment of this specific injury. Subsequent visits for the same injury would use different encounter codes (D for subsequent encounter, S for sequela).

Category

Musculoskeletal injury

Medical Specialty

Orthopedics, Sports Medicine, Primary Care

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
  • Possible imaging studies

What to Expect After

  • Rest and activity modification
  • Physical therapy
  • Pain management
  • Follow-up appointments to monitor healing

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.

Want This Level of Detail on All Your Claims?

Get detailed explanations for every medical code on your Medicare bills. Currently supporting Medicare only.