8B61.1

ICD-11 MMS 2026-01

Late infantile spinal muscular atrophy, Type II

Description

In SMA type 2, muscle weakness is seen between the ages of 6 to 18 months. The child can sit unsupported, but cannot stand or walk independently. Death usually occurs between 2 years of age and young adulthood.

Index terms

  • Late infantile spinal muscular atrophy, Type II
  • Intermediate type spinal muscular atrophy
  • intermediate type SMA - [spinal muscular atrophy]
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  • late infantile SMA - [spinal muscular atrophy], Type II
  • type 2 SMA - [spinal muscular atrophy]

Exclusions from above levels

  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
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  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • 8B61.0 – Infantile spinal muscular atrophy, Type I
  • 8B61.2 – Juvenile form spinal muscular dystrophy, Type III
  • 8B61.3 – Adult onset spinal muscular atrophy, Type IV
  • 8B61.4 – Localised spinal muscular atrophy
  • 8B61.Y – Other specified spinal muscular atrophy
  • 8B61.Z – Spinal muscular atrophy, unspecified

Foundation entity

Late infantile spinal muscular atrophy, Type II – http://id.who.int/icd/entity/867148636

Allowed postcoordination axes

Part of: 8B61: Spinal muscular atrophy › 08: Diseases of the nervous system