Code System Concept

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Code System Concept

Code System Concept Code	770628008
Code System Concept Name	Diffuse leptomeningeal melanocytosis (disorder)
Code System Preferred Concept Name	Diffuse leptomeningeal melanocytosis (disorder)
Concept Status	Published
Concept Status Date	09/01/2024
Code System Name	SNOMED-CT

Concept Relationships
Concept Details

Concept Details

Code System Code	PH_SNOMED-CT
Code System OID	2.16.840.1.113883.6.96
HL7 Table 0396 Code	SCT
Superseded By Concept
SDO Concept Status	Active
SDO Concept Status Date	01/31/2019
SDO Date Created	01/31/2019
SDO Date Revised	01/31/2019
Description	A rare tumour of meninges arising from leptomeningeal melanocytes, characterised by diffuse infiltration of the leptomeninges (pia mater and arachnoidea) anywhere in the central nervous system. Clinical features may include stillbirth, intracranial hypertension and hydrocephalus, seizure, ataxia, syringomyelia, cranial nerve palsy, intracranial haemorrhage, sphincter dysfunction and neuropsychiatric symptoms. Transformation into malignant melanoma of the central nervous system was reported. It may be associated with congenital nevi, as a part of neurocutaneous melanosis.
Sequence

Extended Properties

No extended properties.

Concept Alternate Designations

SDO Designation ID	Concept Designation Description	Status	Designation Type	PHIN Preferred Term Flag	Code Flag
3701695012	Diffuse leptomeningeal melanocytosis	Active	Synonym	false	false

Associated Value Sets

Value Set Name	Version(s)
Clinical Finding (NNDSS)	2 , 1
Disease	10 , 9 , 8
Problem Value Set	3

Parent Concepts Parent Concepts Parent/Child (Relationship Type) Benign neoplasm of meninges (disorder) {109913001 , SNOMED-CT } Diffuse melanosis of meninges (disorder) {277526007 , SNOMED-CT } Melanocytic nevus (disorder) {400096001 , SNOMED-CT }	Other Relationships No other relationships present.
Child Concepts No child concepts present.

Page last reviewed:June 20, 2024
Page last updated:June 20, 2024
Content source:
- Centers for Disease Control and Prevention,