Long‐term prognosis of enteral feeding and parenteral nutrition in a population aged 75 years and older: a population‐based cohort study

Table 1 ICD-10 coding and scoring algorithms for the Charlson Comorbidity Index

Comorbidities/underlying diseases	ICD-10	Score
Comorbidities^a
Chronic pulmonary disease	I278; I279; J40-J47; J60-J67; J684; J701; J703	1
Rheumatologic disease (connective tissue disease)	M05; M06; M315; M32; M33; M34; M351; M353; M360	1
Diabetes with chronic complications (diabetes with end-organ damage)	E102-E105; E107; E112-E115; E117; E122-E125; E127; E132-E135; E137; E142-E145; E147	1
Renal disease (moderate or severe renal disease)	I120; I131; N032-N037; N052-N057; N18; N19; N250; Z490; Z491; Z492; Z940; Z992	1
Congestive heart failure	I110; I130; I132; I255; I420; I425-I429; I43; I50; P290	2
Dementia	F00-F03; F051; G30; G311	2
Mild liver disease	B18; K700-K703; K709; K713-K715; K717; K73; K74; K760; K762-K764; K768; K769; Z944	2
Hemiplegia or paraplegia	G041; G114; G801; G802; G81; G82; G830-G834; G839	2
Any malignancy including leukemia and lymphoma^b	C00-C26; C30-C34; C37-C41; C43; C45-C58; C60-C76; C81-C85; C88; C90-C97	2
Moderate or severe liver disease	I850; I859; I864; I982; K704; K711; K721; K729; K765; K766; K767	4
AIDS/HIV	B20-B22; B24; Z21	4
Metastatic solid tumor^b	C77-C80	6
Major underlying diseases^c
Cerebrovascular disease	G45; G46; H340; I60-I69	-
Neuromuscular disease	F023; G10-13; G20-23; G35-37; G61; G700; G71; G903; G91	-
Dementia	F00-F03; F051; G30; G311	-
Pneumonia	J120-189, J690	-

^aComorbidities for the Charlson Comorbidity Index were extracted from the disease information in-hospital claims within 365 days before the initiation of gastrostomy (GS), nasogastric tube feeding (NGT), and parenteral nutrition (PN)
^bMalignancies
^cMajor underlying diseases were extracted from in-hospital claims when the patients initially received GS, NGT, and PN
ICD International Statistical Classification of Diseases and Related Health Problems

ISSN: 1471-2318