ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.0 > M05.04 M05.04 Felty's syndrome, hand Non-Billable/Non-Specific Applicable To Felty's syndrome, metacarpus and phalanges Codes M05.041Felty's syndrome, right handM05.042Felty's syndrome, left handM05.049Felty's syndrome, unspecified hand