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ICD-10 diagnosis code

M18.4 Other secondary arthrosis of first carpometacarpal joints, bilateral

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M18.4 is the ICD-10 code for Other secondary arthrosis of first carpometacarpal joints, bilateral. It is a four-character subcategory of M18 (Arthrosis of first carpometacarpal joint), the most specific level in the WHO edition. It belongs to the block M15–M19 (Arthrosis) in Chapter XIII, Diseases of the musculoskeletal system and connective tissue.

Code type
Subcategory (4 characters)
Chapter
XIII · M00–M99
Classification
WHO ICD-10, 2019 version

M18.4 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

M18.4Annan sekundär artros i första karpometakarpalleden, dubbelsidig

NorwayICD-10-NO

M18.4Annen bilateral sekundær artrose i første karpometakarpalledd

DenmarkICD-10-DK

DM184Anden form for sekundær bilateral artrose i tommelfingers rodled

FinlandICD-10-FI

M18.4Muu kummankin peukalon kämmennivelen (CMC) sekundaarinen nivelrikko

GermanyICD-10-GM

M18.4Sonstige sekundäre Rhizarthrose, beidseitig

FranceICD-10-FR

M18.4Autres arthroses secondaires de la première articulation carpométacarpienne,

NetherlandsICD-10-NL

M18.4secundaire artrose van eerste carpometacarpale-gewrichten, overig,

United StatesICD-10-CM

M18.4Other bilateral secondary osteoarthritis of first carpometacarpal joints

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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