| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Ground substance of cartilage | Is a | True | Cartilage tissue | Inferred relationship | Some |  | 
| Laryngeal cartilage structure | Is a | False | Cartilage tissue | Inferred relationship | Some |  | 
| Primary excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary laminectomy excision of cervical intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary hemilaminectomy excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Primary posterior excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Primary microdiscectomy of cervical intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Revision excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional laminectomy excision of cervical intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Revisional hemilaminectomy excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revision anterior excision cervical disc and fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Revisional foraminotomy of cervical spine | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional microdiscectomy of cervical intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary anterior excision thoracic disc and fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary costotransversectomy of thoracic intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revision anterior excision thoracic disc and fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revisional costotransversectomy of thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary laminectomy excision of lumbar intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary fenestration excision of lumbar disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary anterior excision of lumbar disc and posterior fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary anterior excision of lumbar disc and posterior instrumentation | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary lumbar microdiscectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary posterior excision of lumbar disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional fenestration excision of lumbar intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional anterior excision of lumbar disc and fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional anterior excision of lumbar disc and posterior instrumentation | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional lumbar microdiscectomy (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional posterior excision of lumbar disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Laser discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Excision of lumbar intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Lumbar microdiscectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary anterior excision of cervical intervertebral disc and interbody fusion of joint of cervical spine | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Primary anterior excision of lumbar disc and fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revisional anterior excision of lumbar disc and posterior fusion | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary excision thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revision excision thoracic intervertebral disc (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Automated percutaneous lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Excision of thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary laser excision of lumbar intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary laser excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Primary laser excision of thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Chondrectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Costochondrectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Fenestration of intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrectomy of spine (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Chondrectomy of shoulder | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Excision of meniscus of acromioclavicular joint (procedure) | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Excision of meniscus of sternoclavicular joint | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary foraminotomy of cervical spine | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Revisional fenestration excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional laminectomy excision of lumbar intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Percutaneous discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary percutaneous intradiscal lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary anterior excision of cervical intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Other specified primary excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Primary excision of cervical intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional posterior excision of cervical intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revisional anterior excision of cervical intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 3 | 
| Other specified revisional excision of cervical intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional excision of cervical intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary anterolateral excision of thoracic intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Excision of thoracic intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Other specified primary excision of thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary excision of thoracic intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional anterolateral excision of thoracic intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revisional excision of thoracic intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Other specified revisional excision of thoracic intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional excision thoracic intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary anterior excision of lumbar disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Other specified primary lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Primary excision of lumbar intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional anterior excision of lumbar disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Other specified revisional lumbar discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Revisional excision of lumbar intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Excision of intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Primary excision of intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Revisional excision of intervertebral disc NEC | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Other specified excision of intervertebral disc | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Excision of intervertebral disc NOS | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Spinal decompression with discectomy | Procedure site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Infectious disorder of cartilage | Finding site | False | Cartilage tissue | Inferred relationship | Some |  | 
| Chondrocalcinosis (disorder) | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Idiopathic chondrocalcinosis | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Familial chondrocalcinosis | Finding site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Secondary chondrocalcinosis | Finding site | False | Cartilage tissue | Inferred relationship | Some | 2 | 
| Chondrocalcinosis, unspecified | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of unspecified site | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the shoulder region | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the upper arm | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the forearm | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the hand | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the pelvic region and thigh | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the lower leg | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of the ankle and foot | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of multiple sites | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis unspecified, of other specified site | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| Chondrocalcinosis NOS | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 | 
| [X]Other chondrocalcinosis | Finding site | False | Cartilage tissue | Inferred relationship | Some | 1 |