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ICD-10 diagnosis code

M18.9 Arthrosis of first carpometacarpal joint, unspecified

This page in Swedish

M18.9 is the ICD-10 code for Arthrosis of first carpometacarpal joint, unspecified. 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

M18.9 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

M18.9Artros i första karpometakarpalleden, ospecificerad

NorwayICD-10-NO

M18.9Uspesifisert artrose i første karpometakarpalledd

DenmarkICD-10-DK

DM189Artrose i tommelfingers rodled UNS

FinlandICD-10-FI

M18.9Määrittämätön peukalon kämmennivelen (CMC) nivelrikko

GermanyICD-10-GM

M18.9Rhizarthrose, nicht näher bezeichnet

FranceICD-10-FR

M18.9Arthrose de la première articulation carpométacarpienne, sans précision

NetherlandsICD-10-NL

M18.9artrose van eerste carpometacarpale-gewricht, niet-gespecificeerd

United StatesICD-10-CM

M18.9Osteoarthritis of first carpometacarpal joint, unspecified

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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