Further, specifiers are also indicated if there is another known medical or genetic condition (e.g., Rett Syndrome, Fragile-X, Down Syndrome, epilepsy, etc.), history of environmental exposure (e.g., valproate, fetal alcohol syndrome, very low birth weight), or neurodevelopmental, mental, or...
There are also extension codes that describe both a personal history of various conditions, and a family history of various conditions, cluster coding allows for the specific condition to be combined with the personal history code. Extension codes for diagnosis timing - ‘Present on admission’ vs...
and are thus provided with a unique identifier in the Beta version of ICD-11, which is 10 times more than in ICD10. A rare disease linearization is also planned. The current beta version is open for public consultation and comments, and to be used...