ICD-10-CM > M00-M99 > M20-M25 M20-M25 Other joint disorders Type 2 Excludes joints of the spine (M40-M54) Codes M20Acquired deformities of fingers and toesM21Other acquired deformities of limbsM22Disorder of patellaM23Internal derangement of kneeM24Other specific joint derangementsM25Other joint disorder, not elsewhere classified