...The ICD-10 F45.0 coding for ME/CFS patients goes against the WHO classification but the Government appears to be insisting that it is still adhering to the WHO classification. It seems that they say one thing and do another.
I have already mentioned the following "in another place":
Change of Parent for Chronic fatigue syndrome (disorder) SCTID: 52702003
SNOMED CT is structured differently to ICD-10 and ICD-11. SNOMED CT doesn't use a chapter system. Instead, disease and disorder terms are arranged hierarchically under a series of Parent terms which provide "Relationships" for the Concept term.
SNOMED CT International Edition browser and a number of country editions can be viewed here:
http://browser.ihtsdotools.org/?
NHS Digital managed UK Edition can be viewed here:
https://termbrowser.nhs.uk/?
History of CFS, ME in SNOMED CT:
In SNOMED CT, the lead term is Chronic fatigue syndrome (Concept SCTID: 52702003).
Prior to July 2015, CFS and its Synonym terms were assigned two Parents:
Multisystem disorder; and
Mental disorder.
Following discussions between the Countess of Mar and SNOMED International, it was agreed that the
Mental disorder Parent would be removed from CFS and that this would be actioned for the July 2015 release.
At the same time, a change was made for the listing of Postviral fatigue syndrome (a change which had not been requested by the Countess of Mar).
Postviral fatigue syndrome had been listed under Children to CFS. But PVFS was now assigned a new SCTID code of its own and moved under new Parents: Post-viral disorder, under Parent: Post-infectious disorder.
The Multisystem disorder Parent retired:
In 2017, the SNOMED International classification managers decided that the Parent term:
Multisystem disorder was not sufficiently specific for the purposes of their terminology system and that the term should be retired from use, across the entire system.
The
Multisystem disorder Parent had 90 Concept terms located under it, including CFS. So its retirement for the January 2018 release had implications for
all of these terms - not just for CFS.
When the Multisystem disorder Parent was retired, many of these 90 terms were relocated under more specific Parents. A few of these terms, including CFS, were not re-assigned to new Parents.
(A small number of these 90 terms have been retired from the system altogether because they were historical terms, or duplicates or were considered to be ambiguous terms that were unsuitable for inclusion.)
The removal of the Multisystem disorder Parent left CFS without a body system or aetiology Parent. Now, its only Parents were:
Parents
Clinical finding (finding)
We felt this was not ideal. But it presented a good opportunity to request that a more specific Parent should be assigned to CFS.
Via Forward-ME, a formal request and a rationale text for adding the Parent:
Disorder of nervous system to CFS was submitted.
A couple of weeks later, we were advised that the request for this change had been entered into the International Edition's peer review process and had been approved.
The change is scheduled to be actioned for the July 2018 release.
This change would then be incorporated into the next release of the UK Edition, in October 2018, and in all the country editions, as they publish their new releases.
If this change goes forward without any unforeseen delays, then for the July 2018 release, CFS should display like this in SNOMED CT:
Parents
Disorder of body system (disorder)
Disorder of nervous system (disorder)
Chronic fatigue syndrome (disorder) SCTID: 52702003
52702003 | Chronic fatigue syndrome (disorder) |
Myalgic encephalitis
Myalgic encephalopathy
Iceland disease
Benign myalgic encephalomyelitis
Chronic fatigue syndrome
Myalgic encephalomyelitis syndrome
ME - Myalgic encephalomyelitis
Myalgic encephalomyelitis
CFS - Chronic fatigue syndrome
Chronic fatigue syndrome (disorder)
Children
There are no Children under CFS in the International Edition. But the UK Edition includes three severity specifier options: Mild CFS; Moderate CFS; Severe CFS. These are marked with the Union Flag symbol, to indicate that inclusion of these three additional severity terms is specific to the UK Edition.
For SNOMED CT, SCTID: 52702003 Chronic fatigue syndrome (disorder) was already cross mapped to ICD-10 G93.3. This change of Parent consolidates that relationship.
Caveat:
This request for addition of the Parent: Disorder of nervous system has been accepted. But the draft for the next release has not yet been finalized. I will update you again once it has reached the pre-finalization stage (a few weeks before the July release goes live).
UPDATE at June 11, 2018:
The July 31, 2018 Release has now reached the BETA Release stage:
https://confluence.ihtsdotools.org/...nal+Edition+Beta+release+available+to+Members