Charlson Comorbidity Index: Difference between revisions

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The Charlson Comorbidity Index is a method of classifying prognostic comorbidity in longitudinal studies.

{{Reporting Indicators

| description = The Charlson Comorbidity Index is a method of classifying prognostic comorbidity in longitudinal studies.

| indicator_name = Charlson Comorbidity Index

| created_raw = Created

| program = Critical Care and Medicine

| indicator_start_date = 1998-09-14

| indicator_end_date =

}}

Some [[Comorbid Diagnosis]] have '''points''' associated with them that contribute to an overall comorbidity score. This score reflects the cumulative increased likelihood of one year mortality.

==Structure==

~~Contains '''19 primary~~ medical conditions''' of comorbidity some of which contain subcategories of diseases related to the primary category. For a list of all diagnosis applicable that we use go to: [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] (or [[Comorbid_Disease-General_Information#Comorbid_List]] as former may not include all sub-diagnoses).

*The CCI takes account of 17 chronic medical conditions

~~== ICD10 ==~~

*Each of the 17 items has a certain number of points, and the total score is the sum of all of them.

~~{{ICD10}}~~

**There is one tricky thing about the scoring though:

* [[~~Concept~~:~~ICD10~~ Charlson ~~Comorbidity~~]] - [[ICD10 ~~Diagnosis|ICD10 Diagnoses~~]] ~~with Charlson scores~~

***Of the 17 there are two are mutually exclusive pairs: (a) Diabetes Mellitus with and without chronic complications, and (b) Liver disease as mild vs. moderate/severe. If you should qualify for both members of a pair, then only count the points for the more severe (higher scoring). Example: if you have diagnoses that qualify you for both mild liver disease and moderate/severe liver disease, only include the points from the latter.

*For a list of all diagnosis applicable that we use go to: [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] (or [[Charlson Comorbid coding (pre ICD10)#Comorbid_List]] as former may not include all sub-diagnoses).

==~~Collection Start Date~~==

== Derivation ==

~~September 14~~, ~~1998~~

* the actual score: [[query Charlson_Score_pre_and_ICD10]]

* ICD10 (includes all admission having [[Dispo DtTm]] starting Jan 1, 2019)

** [[Charlson Comorbidities in ICD10 codes]]

** [[Charlson Comorbidity scoring in ICD10 codes]]

* pre-ICD10 (includes all admissions having [[Dispo DtTm]] before Jan 1, 2019)

** [[Charlson Comorbidity scoring in pre-ICD10 codes]]

=== We do not include an age factor ===

The original Charlson paper optionally mentions an age factor. We do not use it. Confirmed with Dr. Garland and Dr. Roberts 2025-06-19.

{{Todo

| who = Tina

| todo_added = 2025-06-19

| todo_action = 2025-06-19

| question =

* I need to confirm this is not in any of our VBA code or queries

* I implemented it in CCMDB (not CFE for some reason) "L_ICD10_Charlson_Agepts" query.

}}

== Data Use ==

*[[~~:Category: MOST | MOST~~]] score for Medicine

* [[ALERT Scale]] score for Medicine

*Some items are use for [[APACHE II]] score for Critical Care. For a specific list of chronic condition applicable to APACHE II scoring see: [[Chronic Health APACHE]]

* Some items are use for [[APACHE II]] score for Critical Care. For a specific list of chronic condition applicable to APACHE II scoring see: [[Chronic Health APACHE]]

* {{discussion}} is this used in [[Reporting]]? If so, which? Ttenbergen 01:25, 2017 September 23 (CDT)

== Background ==

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=== Article and related publications ===

[[Media:Charlson ii article page 2 19 items with points.JPG | image of Charlson article, page 2]]. ~~A PDF of the complete original article can be found on- [[X:\]]CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF~~

* "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation" ME Charlson

**[http://www.aqc.ch/download/HSM_Suppl_8_charlson.pdf PDF of article] (also: A PDF of the complete original article can be found on- {{S:\MED\MED_CCMED}}CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF)

**[[Media:Charlson ii article page 2 19 items with points.JPG | image of Charlson article, page 2]].

[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC545968/ Article: An electronic application for rapidly calculating Charlson comorbidity score]. Article with link to a comorbid score calculator developed in MS Excel using a macro.

*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC545968/ Article: An electronic application for rapidly calculating Charlson comorbidity score]. Article with link to a comorbid score calculator developed in MS Excel using a macro.

*Copy of this calculator can be found: X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\comorbid calculator

**Copy of this calculator can be found: {{S:\MED\MED_CCMED}}CCMDB_ADMIN_DATABASE\Charlson_Comorbids\comorbid calculator

*[[Media:Quan2005.pdf | "Coding algorithms for defining comorbidities in ICD-9-CM and ICD-10 administrative data" Hude Quon]]

* [[MCHP]] Resources:

** [http://mchp-appserv.cpe.umanitoba.ca/Upload/SAS/_CharlsonICD10.sas.txt SAS code to convert IC10 to Charlson]

** [http://mchp-appserv.cpe.umanitoba.ca/concept/Charlson%20Comorbidities%20-%20Coding%20Algorithms%20for%20ICD-9-CM%20and%20ICD-10.pdf Deyo and Quon Charlson ranges]

== Legacy ==

See [[:Category:Charlson Comorbid Diagnosis (pre ICD10)]] for how Charlson was calculated before ICD10.

== Related articles ==

[[Category:Charlson Comorbid Diagnosis | *]]

[[Category:Comorbid]]

@@ Line 1: / Line 1: @@
-The Charlson Comorbidity Index is a method of classifying prognostic comorbidity in longitudinal studies.
+{{Reporting Indicators
+| description = The Charlson Comorbidity Index is a method of classifying prognostic comorbidity in longitudinal studies.
+| indicator_name = Charlson Comorbidity Index
+| created_raw = Created
+| program = Critical Care and Medicine
+| indicator_start_date = 1998-09-14
+| indicator_end_date =
+}}
 Some [[Comorbid Diagnosis]] have '''points''' associated with them that contribute to an overall comorbidity score. This score reflects the cumulative increased likelihood of one year mortality.
 ==Structure==
-Contains '''19 primary medical conditions''' of comorbidity some of which contain subcategories of diseases related to the primary category.  For a list of all diagnosis applicable that we use go to: [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] (or [[Comorbid_Disease-General_Information#Comorbid_List]] as former may not include all sub-diagnoses).
+*The CCI takes account of 17 chronic medical conditions
-== ICD10 ==
+*Each of the 17 items has a certain number of points, and the total score is the sum of all of them.
-{{ICD10}}
+**There is one tricky thing about the scoring though:
-* [[Concept:ICD10 Charlson Comorbidity]] - [[ICD10 Diagnosis|ICD10 Diagnoses]] with Charlson scores
+***Of the 17 there are two are mutually exclusive pairs: (a) Diabetes Mellitus with and without chronic complications, and (b) Liver disease as mild vs. moderate/severe. If you should qualify for both members of a pair, then only count the points for the more severe (higher scoring).  Example:  if you have diagnoses that qualify you for both mild liver disease and moderate/severe liver disease, only include the points from the latter.
+*For a list of all diagnosis applicable that we use go to: [[:Category: Charlson Comorbid Diagnosis | Charlson Comorbid Diagnosis]] (or [[Charlson Comorbid coding (pre ICD10)#Comorbid_List]] as former may not include all sub-diagnoses).
-==Collection Start Date==
+== Derivation ==
-September 14, 1998
+* the actual score: [[query Charlson_Score_pre_and_ICD10]]
+* ICD10 (includes all admission having [[Dispo DtTm]] starting Jan 1, 2019)
+** [[Charlson Comorbidities in ICD10 codes]]
+** [[Charlson Comorbidity scoring in ICD10 codes]]
+* pre-ICD10 (includes all admissions having [[Dispo DtTm]] before Jan 1, 2019)
+** [[Charlson Comorbidity scoring in pre-ICD10 codes]]
+=== We do not include an age factor ===
+The original Charlson paper optionally mentions an age factor. We do not use it. Confirmed with Dr. Garland and Dr. Roberts 2025-06-19.
+{{Todo
+ | who = Tina
+ | todo_added = 2025-06-19
+ | todo_action = 2025-06-19
+ | question =
+* I need to confirm this is not in any of our VBA code or queries
+* I implemented it in CCMDB (not CFE for some reason) "L_ICD10_Charlson_Agepts" query.
+ }}
 == Data Use ==
-*[[:Category: MOST | MOST]] score for Medicine
+* [[ALERT Scale]] score for Medicine
-*Some items are use for [[APACHE II]] score for Critical Care.  For a specific list of chronic condition applicable to APACHE II scoring see:  [[Chronic Health APACHE]]
+* Some items are use for [[APACHE II]] score for Critical Care.  For a specific list of chronic condition applicable to APACHE II scoring see:  [[Chronic Health APACHE]]
-* {{discussion}} is this used in [[Reporting]]? If so, which? Ttenbergen 01:25, 2017 September 23 (CDT)
 == Background ==
@@ Line 28: / Line 52: @@
 === Article and related publications ===
-[[Media:Charlson ii article page 2 19 items with points.JPG | image of Charlson article, page 2]].  A PDF of the complete original article can be found on- [[X:\]]CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF
+* "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation" ME Charlson
+**[http://www.aqc.ch/download/HSM_Suppl_8_charlson.pdf PDF of article] (also: A PDF of the complete original article can be found on- {{S:\MED\MED_CCMED}}CCMDB_ADMIN_DATABASE\Charlson_Comorbids\OriginalCharlsonArticlePDF)
+**[[Media:Charlson ii article page 2 19 items with points.JPG | image of Charlson article, page 2]].
-[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC545968/ Article:  An electronic application for rapidly calculating Charlson comorbidity score].  Article with link to a comorbid score calculator developed in MS Excel using a macro.
+*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC545968/ Article:  An electronic application for rapidly calculating Charlson comorbidity score].  Article with link to a comorbid score calculator developed in MS Excel using a macro.
-*Copy of this calculator can be found: X:\CCMDB_ADMIN_DATABASE\Charlson_Comorbids\comorbid calculator
+**Copy of this calculator can be found: {{S:\MED\MED_CCMED}}CCMDB_ADMIN_DATABASE\Charlson_Comorbids\comorbid calculator
+*[[Media:Quan2005.pdf | "Coding algorithms for defining comorbidities in ICD-9-CM and ICD-10 administrative data" Hude Quon]]
+* [[MCHP]] Resources:
+** [http://mchp-appserv.cpe.umanitoba.ca/Upload/SAS/_CharlsonICD10.sas.txt SAS code to convert IC10 to Charlson]
+** [http://mchp-appserv.cpe.umanitoba.ca/concept/Charlson%20Comorbidities%20-%20Coding%20Algorithms%20for%20ICD-9-CM%20and%20ICD-10.pdf Deyo and Quon Charlson ranges]
 == Legacy ==
 See [[:Category:Charlson Comorbid Diagnosis (pre ICD10)]] for how Charlson was calculated before ICD10.
+== Related articles ==
+{{Related Articles}}
 [[Category:Charlson Comorbid Diagnosis | *]]
 [[Category:Comorbid]]