Z6831 - Body Mass Index (BMI) between 31.0 and 31.9 in adults

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 indicates that your Body Mass Index (BMI) falls between 31.0 and 31.9. BMI is a measurement that uses your height and weight to assess whether you're in a healthy weight range. A BMI in this range is classified as obesity class I according to standard medical guidelines. This code is used for documentation and tracking purposes in your medical record.

Additional Information

This is a documentation code used to record BMI status. It does not represent a billable procedure or treatment, but rather a health status indicator that may inform treatment decisions.

Category

Body Mass Index Documentation

Medical Specialty

General Medicine/Primary Care

Expected Costs

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

What's Required Before This

  • Height and weight measurements
  • BMI calculation

What to Expect After

  • Nutritional counseling may be recommended
  • Regular monitoring of weight and health metrics
  • Discussion of lifestyle 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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