Which ICF Functioning Domain Does Working Memory Map To?

Working memory is the mental workspace where a young child briefly holds and manipulates information — and in the ICF it maps cleanly to a specific functioning code.

In short

In the International Classification of Functioning, Disability and Health (ICF), Working Memory maps to b1440 — short-term memory, nested within the chapter of Mental functions (b1) and more specifically the memory functions (b144) group. It belongs to the Body Functions component of the ICF, under the broader domain of cognitive (mental) functions. In early childhood this is the capacity to hold a small amount of information "online" for a few seconds and use it to guide an immediate action — recalling a two-step instruction, holding the start of a sentence while finishing it, or keeping a rule in mind during play.

The science: where it sits in the ICF architecture

The ICF is organised hierarchically. At the top sits the component Body Functions (b); within it, Mental functions (b1); within that, Specific mental functions (b140–b189), which house Memory functions (b144). The code b1440 denotes short-term memory — "a memory store of limited capacity and duration from which information is lost if not consolidated." Contemporary cognitive science frames working memory as more than passive short-term storage — it includes active manipulation and attentional control — yet within the ICF taxonomy it is operationalised under b1440, often considered alongside b1400 (sustaining attention) and b1641 (organising and planning) when a clinician profiles a child's executive functioning. Importantly, the ICF describes functioning, not diagnosis: it captures how well a capacity operates and how it interacts with activities, participation and environment, which makes it well suited to the strengths-based, whole-child profiling used in early-childhood developmental work.

Why this mapping matters in early childhood

For researchers and clinicians, mapping working memory to b1440 allows a child's cognitive profile to be described in a shared, interoperable language that links body-function capacities to real-world activities (ICF Activities and Participation, d-codes) such as carrying out daily routines or learning to read. This supports cross-study comparability and goal-setting that connects an underlying capacity to the everyday participation it enables.

The Pinnacle way

This is general educational information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care, through a structured clinician-administered assessment, never from an app or form. Our teams profile working memory alongside attention, language and executive skills, then translate findings into an individualised plan that may draw on occupational therapy and other supports. Learn more about how we measure and support development at [Pinnacle Blooms Network](/).

Trusted sources

WHO ICF browser entry for b1440 short-term memory and the b144 memory functions group; WHO documentation on the ICF as a classification of functioning rather than diagnosis.

Next step — If you are mapping a child's cognitive profile or wish to understand working-memory functioning in context, arrange a developmental review to translate ICF-aligned capacities into practical, goal-led support.