Bills and insurance
What Is an ICD-10 Code on a Medical Bill?
ICD-10 Code · say it: eye-see-dee TEN kodeAlso written: ICD-10-CM, diagnosis code, ICD code, International Classification of Diseases
Short answer
An ICD-10 code is a letter-and-number code that describes a diagnosis, symptom or reason for care on medical records and bills.
What it means
ICD stands for International Classification of Diseases, a system maintained by the World Health Organization. Version 10 is used in many countries, often with national additions. Each code stands for a condition, symptom, injury or reason for a visit.
Codes start with a letter followed by numbers, such as a code for a cough or for a routine check-up. They are used for billing, insurance, record keeping and health statistics.
A code on a bill or form may reflect a symptom being checked, a condition being ruled out, or a reason for a screening test. It does not always mean a final diagnosis has been made. A newer version, ICD-11, is gradually being adopted.
Where you may see it
- Medical bills and insurance claims
- Explanation of benefits (EOB) statements
- Referral letters, sick notes and lab request forms
📄 How it looks on a report
Dx: R05.9 - Cough, unspecified
🙅 What it does not mean
- A diagnosis code on a bill does not always mean you have that condition; it may be the reason a test was ordered.
- An unfamiliar code is not necessarily serious; many codes simply describe symptoms or routine visits.
- ICD-10 codes describe why care was given; CPT codes describe what was done.
🗒️ Questions to ask your doctor
🧾 Reports where you will see “ICD-10 Code”
Paste or upload the report and every line of it is explained, with personal details removed first.
🔗 Read more from trusted sources
- “ICD-10 Code” on MedlinePlus ↗
US National Library of Medicine
Seeing this word on your own report? Get every line of it explained, free.
Explain my report🧩 Related words
🔎 Look up another word
More words: bills and insurance
General information about a medical word, not advice about your own results. Ask the clinician who ordered the test what it means for you.