| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Malignant melanoma of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Benign tumor of upper labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 3 | 
| Benign tumor of frenum of upper lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 3 | 
| Benign tumor of labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 4 | 
| Benign tumor of frenum of lower lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 6 | 
| Neoplasm of uncertain behavior of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier |  | 
| Acquired ectropion of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier |  | 
| Unilateral complete cleft palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Unilateral incomplete cleft palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Bilateral complete cleft palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 3 | 
| Bilateral incomplete cleft palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 3 | 
| Central complete cleft palate with cleft lip | Finding site | True | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Central incomplete cleft palate with cleft lip | Finding site | True | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cleft hard palate with cleft lip, bilateral | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Unilateral cleft hard palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital ectropion of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Deep partial thickness burn of lip(s) | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Deep full thickness burn of the lip(s) without loss of body part | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Deep full thickness burn of the lip(s), with loss of body part | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Cheilopalatoschisis | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Palatoschisis | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma of frenum of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma in situ of frenum of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Benign neoplasm of frenum of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 4 | 
| Carcinoma of frenum of upper lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma in situ of frenum of upper lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Carcinoma of frenum of lower lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma in situ of frenum of lower lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Carcinoma of commissure of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma in situ of labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Carcinoma in situ of upper labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Carcinoma in situ of lower labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 13 | 
| Benign tumor of vermilion border of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Benign tumor of lower labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 7 | 
| Correction of deformity of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital commissural pits | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Superficial partial thickness burn of lip(s) | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Carcinoma of lip | Finding site | True | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of lower labial mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Surgical biopsy of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Malignant tumor of lipstick area of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital microcheilia | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Sore lip | Finding site | True | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Non-surgical lip biopsy | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant tumor of frenum of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified extirpation of lesion of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Extirpation of lesion of lip NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified correction of deformity of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Correction of deformity of lip NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other reconstruction of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other reconstruction of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other reconstruction of lip NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other repair of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Advancement of mucosa of lip NEC | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other repair of lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other repair of lip NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operations on lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other operation on lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operation on lip NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified operations on lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lip operations NOS | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Attachment of pedicle graft to lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Complete bilateral cleft palate with cleft lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 4 | 
| Alar base excision | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Alar base excision | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Correction of cleft lip nasal deformity | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Columella lengthening procedure unspecified | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Revision of primary closure of cleft lip | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 2 | 
| Unilateral lip adhesion | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lip adhesion of bilateral cleft lips | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of unilateral cleft lip unspecified | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of bilateral cleft lip unspecified | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Synchronous bilateral cleft lip repair | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Asynchronous bilateral cleft lip repair | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with tongue flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with fan flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip using rotation advancement flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with McGregor flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with Karapandzic flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with nasolabial flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with Abbe flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with Abbe-Estlander flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with distant flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reconstruction of lip with microvascular transferred flap | Procedure site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of upper lip, inner aspect NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lower lip, inner aspect NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip unspecified, inner aspect | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip unspecified, frenulum | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip unspecified, mucosa | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip, inner aspect NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of other sites of lip | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of vermilion border of lip unspecified | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip, unspecified, external | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip, unspecified, lipstick area | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of lip, vermilion border NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Benign neoplasm of lip NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Diseases of lips NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier |  | 
| Cleft lip, unspecified | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cleft lip NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cleft palate with cleft lip, unspecified | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cleft palate with cleft lip NOS | Finding site | False | Lip structure | Inferred relationship | Existential restriction modifier | 1 |