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ICD-10 diagnosis code

M23.5 Chronic instability of knee

This page in Swedish

M23.5 is the ICD-10 code for Chronic instability of knee. It is a four-character subcategory of M23 (Internal derangement of knee), the most specific level in the WHO edition. It belongs to the block M20–M25 (Other joint disorders) 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

M23.5 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

M23.5Kronisk instabilitet i knäled

NorwayICD-10-NO

M23.5Kronisk instabilitet i kne

  • M23.50Kronisk instabilitet i kne i flere lokalisasjoner
  • M23.51Kronisk instabilitet i kne i fremre korsbånd
  • M23.52Kronisk instabilitet i kne i bakre korsbånd
  • M23.53Kronisk instabilitet i kne i mediale kollaterale ligament
  • M23.54Kronisk instabilitet i kne i laterale kollaterale ligament
  • M23.55Kronisk instabilitet i bakre horn av lateral menisk
  • M23.56Kronisk instabilitet i uspesifisert del av lateral menisk
  • M23.57Kronisk instabilitet i kne i leddkapsel
DenmarkICD-10-DK

DM235Kronisk instabilitet i knæled

FinlandICD-10-FI

M23.5Pitkäaikainen polven epävakaisuus

GermanyICD-10-GM

M23.5Chronische Instabilität des Kniegelenkes

  • M23.50Mehrere Lokalisationen
  • M23.51Vorderes Kreuzband
  • M23.52Hinteres Kreuzband
  • M23.53Innenband [Lig. collaterale tibiale]
  • M23.54Außenband [Lig. collaterale fibulare]
  • M23.57Kapselband
  • M23.59Nicht näher bezeichnetes Band
FranceICD-10-FR

M23.5Instabilité chronique du genou

NetherlandsICD-10-NL

M23.5chronische instabiliteit van knie

United StatesICD-10-CM

Listed through more specific codes:

  • M23.50Chronic instability of knee, unspecified knee
  • M23.51Chronic instability of knee, right knee
  • M23.52Chronic instability of knee, left knee

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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