Hallux valgus (acquired)
Hallux valgus (acquired)
M20.1 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
Acquired lateral deviation of the great toe (hallux valgus / bunion) where the treating clinician has not documented or cannot determine which foot is affected.
M20.11 identifies an acquired lateral deviation of the great toe at the first metatarsophalangeal joint, confirmed on the right foot, resulting from structural changes rather than a congenital condition.
Acquired lateral deviation of the left great toe at the first metatarsophalangeal joint, commonly presenting as a visible medial bony prominence (bunion) of the left foot.
Inclusion & exclusion notes
Excludes 2 (not included here, but may be coded together if both present)
- bunion (M21.6-)