bunion icd 10 code

In ICD-10, the code for bunion (Hallux valgus) is M20.1. This code specifically refers to a bunion at the first metatarsophalangeal joint (the big toe joint).

It's important to note that the ICD-10 codes are used primarily for billing and administrative purposes and not for diagnosis. A healthcare provider will make a diagnosis and then use the appropriate ICD-10 code for billing and record-keeping purposes.

It's also worth mentioning that, in some cases, the bunion may be caused by a underlying condition such as rheumatoid arthritis, and the primary diagnosis will be the underlying condition and the bunion will be considered as a secondary diagnosis.