ICD-10-CM官方指南说明书用户手册.pdf
ICD-10-CMOfficialGuidelinesforCodingandReporting
FY2021–UPDATEDJanuary1,2021
(October1,2020-September30,2021)
Narrativechangesappearinboldtext
ItemsunderlinedhavebeenmovedwithintheguidelinessincetheFY2020version
Italicsareusedtoindicaterevisionstoheadingchanges
TheCentersforMedicareandMedicaidServices(CMS)andtheNationalCenterforHealth
Statistics(NCHS),twodepartmentswithintheU.S.FederalGovernment’sDepartmentofHealth
andHumanServices(DHHS)providethefollowingguidelinesforcodingandreportingusingthe
InternationalClassificationofDiseases,10thRevision,ClinicalModification(ICD-10-CM).
TheseguidelinesshouldbeusedasacompaniondocumenttotheofficialversionoftheICD-10-
CMaspublishedontheNCHSwebsite.TheICD-10-CMisamorbidityclassificationpublished
bytheUnitedStatesforclassifyingdiagnosesandreasonforvisitsinallhealthcaresettings.The
ICD-10-CMisbasedontheICD-10,thestatisticalclassificationofdiseasepublishedbytheWorld
HealthOrganization(WHO).
TheseguidelineshavebeenapprovedbythefourorganizationsthatmakeuptheCooperating
PartiesfortheICD-10-CM:theAmericanHospitalAssociation(AHA),theAmericanHealth
InformationManagementAssociation(AHIMA),CMS,andNCHS.
Theseguidelinesareasetofrulesthathavebeendevelopedtoaccompanyandcomplementthe
officialconventionsandinstructionsprovidedwithintheICD-10-CMitself.Theinstructionsand
conventionsoftheclassificationtakeprecedenceoverguidelines.Theseguidelinesarebasedon
thecodingandsequencinginstructionsintheTabularListandAlphabeticIndexofICD-10-CM,
butprovideadditionalinst