ICD-10-CM > M00-M99 > M70-M79 > M76 > M76.4 M76.4 Tibial collateral bursitis [Pellegrini-Stieda] Non-Billable/Non-Specific Codes M76.40Tibial collateral bursitis [Pellegrini-Stieda], unspecified legM76.41Tibial collateral bursitis [Pellegrini-Stieda], right legM76.42Tibial collateral bursitis [Pellegrini-Stieda], left leg