| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Other specified photodynamic therapy of skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Photodynamic therapy of skin NOS | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Phototherapy to skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Other specified phototherapy to skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Phototherapy to skin NOS | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Photodynamic therapy to subretinal lesion | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Photodynamic therapy to subretinal lesion | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified photodynamic therapy of skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin NOS | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy to skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified phototherapy to skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy to skin NOS | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intermittent phototherapy | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy to choroidal neovascular membrane | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy - NEC | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Visible light therapy NOS | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous photodynamic therapy of lesion of bile duct using fluoroscopic guidance (procedure) | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Interstitial photodynamic therapy of malignant tumour of parotid gland | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic laser therapy to lesion of skin | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intranasal phototherapy | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 |