ICD-10-CM > M00-M99 > M65-M67 > M67 > M67.4 > M67.42 M67.42 Ganglion, elbow Non-Billable/Non-Specific Codes M67.421Ganglion, right elbowM67.422Ganglion, left elbowM67.429Ganglion, unspecified elbow