ICD-11 Classification of Persistent Toe-Walking

A child who walks on their toes long past toddlerhood prompts a fair question — what does ICD-11 actually call this?

In short

Persistent (idiopathic) toe-walking has no dedicated diagnostic code in ICD-11 — it is a clinical descriptor of gait, not a disease entity. When coding is required, it is captured under the gait and mobility abnormality category MB44 Abnormalities of gait and mobility, with MB44.2 Abnormal posture or the broader gait descriptors applied as clinically appropriate. The label "idiopathic" applies only once neurological, orthopaedic and neurodevelopmental causes are excluded.

The classification, precisely

ICD-11 treats toe-walking as a functional sign within Chapter 21 (Symptoms, signs or clinical findings, not elsewhere classified), under MB44 Abnormalities of gait and mobility. Two coding principles matter:

• Idiopathic toe-walking — a diagnosis of exclusion — is recorded via the relevant gait-abnormality descriptor, as ICD-11 offers no specific stem code for it.
• Secondary toe-walking should instead be coded to its underlying aetiology where one is identified: cerebral palsy (Chapter 8, diseases of the nervous system), neuromuscular disorders, a tendoachilles contracture (musculoskeletal chapter), or association with neurodevelopmental conditions including autism spectrum disorder (6A02). In these cases the underlying condition, not the gait sign, drives the primary code.

Clinically this distinction is the whole point: the code follows the cause. A persistent toe-walker therefore warrants assessment of dorsiflexion range, tone, deep-tendon reflexes, developmental history and any sensory or communication differences before "idiopathic" is justified.

When to refer

Refer for assessment when toe-walking persists beyond age 2, is unilateral, is accompanied by limited ankle dorsiflexion, tightness or contracture, regression, hypertonia, or co-occurring speech, social-communication or sensory differences. These point toward a neurological or neurodevelopmental contributor rather than benign idiopathic gait.

The Pinnacle way

Developmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional., under qualified clinician care — never from an online descriptor or code. Where gait sits alongside developmental differences, a structured profile clarifies whether the toe-walking is isolated or part of a broader picture worth supporting. Explore our approach, physiotherapy and motor support, and how the AbilityScore works.

Trusted sources

WHO ICD-11 for Mortality and Morbidity Statistics (Chapter 21; MB44 gait and mobility abnormalities); WHO ICF framework for functioning-based description of gait.

Next step — For a child whose toe-walking persists past age 2 or comes with other developmental differences, arrange a clinician-led developmental assessment.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.