{description: 'Codes requested from LOINC, but not yet approved or assigned. Codes related to comorbidities use the categories originally defined by Elixhauser, and updated by the Agency for Healthcare Research and Quality (AHRQ) Healthcare Cost and Utilization Project (H-CUP) [Elixhauser Comorbidity Software Refined for ICD-10-CM v2021.1](https://www.hcup-us.ahrq.gov/toolssoftware/comorbidityicd10/comorbidity_icd10.jsp). Each comorbidity category is associated with a specific ICD-10-CM value set. For example, the category #CHF (congestive heart failure) refers to the patient having a diagnosis within the [Elixhauser Comorbid Condition Value Set for Congestive Heart Failure](http://hl7.org/fhir/us/mcode/ValueSet/elixhauser-congestive-heart-failure-vs).', package_name: hl7.fhir.us.mcode.r4b, name: LoincRequestedCS, type: null, package_version: 2.1.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/mcode/CodeSystem/loinc-requested-cs', version: 2.1.0}