B134

B134 is the ICF code for Sleep functions, classified under Body Functions. It describes general mental functions of periodic, reversible and selective physical and mental disengagement from one's immediate environment accompanied by characteristic physiological changes.

This ICF category appears in Core Sets for conditions like Diabetes Mellitus (E11), Stroke (I63), Depression (F32), Low Back Pain (M54), and 8 more. It is commonly assessed in rehabilitation, disability evaluation, and care planning for these conditions.

B134 is linked to 12 ICD-11 codes: 2C6Z, 5A11, 5B81.Z, 6A70.Z, and 8 more. These codes correspond to ICD-10 diagnoses whose ICF Core Sets include this functioning category.

B134 belongs to the Body Functions component of the ICF. Physiological functions of body systems, including psychological functions.

B134 has 7 child codes, including: B1340 (Amount of sleep), B1341 (Onset of sleep), B1342 (Maintenance of sleep), and 4 more.

The ICF (International Classification of Functioning, Disability and Health) is a WHO classification that describes how health conditions affect a person's functioning — body functions, body structures, activities and participation, and environmental factors. It complements ICD-10/ICD-11 diagnosis codes with functioning assessment data used in rehabilitation, disability evaluation, and care planning.