ICD-10-CM > M00-M99 > M05-M14 > M06 > M06.2 > M06.27 M06.27 Rheumatoid bursitis, ankle and foot Non-Billable/Non-Specific Codes M06.271Rheumatoid bursitis, right ankle and footM06.272Rheumatoid bursitis, left ankle and footM06.279Rheumatoid bursitis, unspecified ankle and foot