I agree with the advice above and also that it is highly unlikley to never that the condition to be able to report it is met. I have done it maybe twice that I can think of, ever. Not saying it can't happen, it's just extremely rare.
See NCCI manual:
https://www.cms.gov/files/document/medicare-ncci-policy-manual-2023-chapter-4.pdf
6. CPT codes 29874 (Arthroscopy, knee, surgical; for removal of loose body or foreign body (eg, osteochondritis dissecans fragmentation, chondral fragmentation) and 29877 (Arthroscopy, knee, surgical; for debridement/shaving of articular cartilage (chondroplasty) shall not be reported with other knee arthroscopy codes (29866-29889). With 2 exceptions, HCPCS code G0289 (Arthroscopy, knee, surgical; for removal of loose body, foreign body, debridement/shaving of articular cartilage (chondroplasty) at the time of other surgical knee arthroscopy in a different compartment of the same knee) may be reported with other knee arthroscopy codes. Since CPT codes 29880 (Arthroscopy, knee, surgical; with meniscectomy(medial AND lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty) same or separate compartment(s), when performed and 29881 (Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty) same or separate compartment(s), when performed include debridement/shaving of articular cartilage of any compartment, HCPCS code G0289 may be reported with CPT codes 29880 or 29881 only if reported for removal of a loose body or foreign body from a different compartment of the same knee. HCPCS code G0289 shall not be reported for removal of a loose body or foreign body or debridement/shaving of articular cartilage from the same compartment as another knee arthroscopic procedure.
To report it you would have to have say, a medical meniscectomy (29881) and then they would have to go into the lateral compartment (for example) and remove a LB and it has to be at least the same size or greater as the diameter of the cannula (among other requirements as stated above). It's really rare to see this.