FA34.4

ICD-11 MMS 2026-01

Ankylosis of joint

Description

The term ankylosis denotes restricted movement in the joint, and it can be bony or fibrous. Most cases are caused by trauma, infection, radiotherapy, or severe arthritic condition.

Index terms

  • Ankylosis of joint
  • Bony block of joint
  • ankylosis
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  • ankylosis of joint, site unspecified
  • bony ankylosis
  • false ankylosis
  • fibrous ankylosis
  • fibrous ankylosis of joint
  • frozen joint
  • fusion of joint
  • joint ankylosis
  • joint arthrofibrosis
  • joint fusion
  • osseous ankylosis
  • osseous ankylosis of joint
  • pseudoankylosis
  • spurious ankylosis
  • surgical ankylosis
  • true ankylosis
  • Ankylosis of joint, multiple sites
  • Ankylosis of joint, shoulder region
  • Ankylosis of joint, acromioclavicular joint
  • Ankylosis of joint, glenohumeral joint
  • Ankylosis of joint, sternoclavicular joint
  • Ankylosis of joint, upper arm
  • Ankylosis of joint, elbow joint
  • Ankylosis of joint, forearm
  • Ankylosis of joint, wrist joint
  • Ankylosis of joint, hand
  • Ankylosis of joint, carpus
  • Ankylosis of joint, fingers
  • Ankylosis of joint, metacarpus
  • Ankylosis of joint, pelvic region or thigh
  • Ankylosis of joint, hip joint
  • Ankylosis of joint, lower leg
  • Ankylosis of joint, knee joint
  • knee fusion
  • knee joint ankylosis
  • Ankylosis of joint, ankle or foot
  • Ankylosis of joint, ankle joint
  • ankle ankylosis
  • ankle joint ankylosis
  • Ankylosis of joint, metatarsus
  • Ankylosis of joint, other joints in foot
  • Ankylosis of joint, tarsus
  • Ankylosis of joint, toes
  • Ankylosis of joint, head
  • Ankylosis of joint, neck
  • Ankylosis of joint, vertebral column

Excludes

  • FB00 – Ankylosis of spinal joint
  • ME85 – stiffness of joint without ankylosis

Exclusions from above levels

  • 22 – current injury - see injury of joint by body region
  • DA0E.8 – Temporomandibular joint disorders
  • http://id.who.int/icd/entity/1989556002 – Conditions associated with the spine
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  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • FA34.0 – Loose body in joint
  • FA34.1 – Disorder of ligament
  • FA34.2 – Recurrent instability of joint
  • FA34.3 – Contracture of joint
  • FA34.5 – Impingement syndrome of hip
  • FA34.Y – Other joint derangements

Foundation entity

Ankylosis of joint – http://id.who.int/icd/entity/1759045232

Allowed postcoordination axes

Part of: FA34: Certain specified joint derangements › 15: Diseases of the musculoskeletal system or connective tissue