# What is the SNOMED CT concept for Rett Syndrome?

Canonical: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-rett-syndrome
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

In SNOMED CT, Rett syndrome is the concept Rett's disorder (SCTID 68618008), mapping to ICD-11 LD90.0 and legacy ICD-10 F84.2. SNOMED CT carries the computable clinical concept; ICD-11 LD90.0 is the statistical code. Always verify the SCTID against your current SNOMED release.

*Clean terminology mapping is what lets a Rett syndrome diagnosis travel safely across your EHR, your referrals and your research datasets.*

## In short
In **SNOMED CT**, Rett syndrome is represented by the fully specified concept **Rett's disorder (disorder)**, SCTID **68618008**, a child of the X-linked dominant developmental encephalopathy hierarchy. It maps to **ICD-11 LD90.0** (Rett syndrome, under Developmental anomalies / Syndromes with central nervous system involvement) and to the legacy **ICD-10 F84.2**. SNOMED CT gives you the clinically computable concept for the problem list and decision support; ICD-11 LD90.0 is your statistical and reporting code. Always confirm the current SCTID against your active SNOMED CT release, as concept status and synonyms are versioned.

## Why the dual coding matters
Rett syndrome is a clinically diagnosed neurodevelopmental disorder, classically associated with pathogenic *MECP2* variants, characterised by a period of apparently typical early development followed by regression — loss of purposeful hand use with stereotypic hand movements, gait abnormalities, and impaired language and social engagement. For interoperable records, the discipline is two-layered: capture the **SNOMED CT** concept (68618008) for the patient record and clinical reasoning, and the **ICD-11** linearisation code (**LD90.0**) for morbidity coding and notification. SNOMED CT's hierarchy lets you retrieve the condition alongside related encephalopathies and link it to genetic findings; the ICD-11 code preserves comparability in national health statistics under the Indian context. Where downstream therapy planning is needed, the functional picture — communication, motor, sensory and self-care — is described in the **WHO ICF** framework, which complements rather than replaces the diagnostic code.

## The Pinnacle way
Coding identifies a condition; it does not establish one for a given child. A clinical **AbilityScore®** and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from a code or an online form. For families navigating a confirmed or suspected Rett presentation, we translate the diagnosis into a functional, domain-by-domain plan. Explore [how Pinnacle supports development](/), our [occupational therapy](/occupational-therapy) and [speech therapy](/speech-therapy) pathways, and [what the AbilityScore is and how it is established](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
WHO ICD-11 entry for Rett syndrome (LD90.0); SNOMED International concept browser for Rett's disorder; WHO International Classification of Functioning, Disability and Health (ICF) for the functional layer.

**Next step —** Confirm the SCTID in your active SNOMED CT release, then [partner with a Pinnacle centre](/) to convert the diagnosis into a functional therapy plan.

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

## Sources
- WHO ICD-11: Rett syndrome: https://icd.who.int/
- WHO ICF framework for functioning: https://www.who.int/standards/classifications/international-classification-of-functioning-disability-and-health

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Doctor: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Context: https://pinnacleblooms.org/ask/lens/domain/context
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Screen: https://pinnacleblooms.org/ask/lens/route/screen
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- ICD-11 Classification of Rett Syndrome (LD90.0): https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-rett-syndrome
- What is Rett Syndrome, and its ICD-11 features in early childhood?: https://pinnacleblooms.org/ask/what-is-rett-syndrome-and-what-are-its-icd-11-features-in-early-childhood
- Rett Syndrome and ICF Functioning Domains in Early Childhood: https://pinnacleblooms.org/ask/which-icf-functioning-domains-does-rett-syndrome-affect-in-early-childhood
- How Rett Syndrome Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-rett-syndrome-affect-a-child-s-daily-life
- Is Rett Syndrome considered a disability?: https://pinnacleblooms.org/ask/is-rett-syndrome-considered-a-disability
- Is Rett Syndrome Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-rett-syndrome-genetic-or-hereditary
- What are common myths about Rett Syndrome?: https://pinnacleblooms.org/ask/what-are-common-myths-about-rett-syndrome
- Types and Stages of Rett Syndrome: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-rett-syndrome
- What causes Rett syndrome in children?: https://pinnacleblooms.org/ask/what-causes-rett-syndrome-in-children
- Early Intervention Outcomes in Rett Syndrome (Under 7): https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-rett-syndrome-in-children-under-7
- What is Rett Syndrome?: https://pinnacleblooms.org/ask/what-is-rett-syndrome
- What is Rett Syndrome, and what does it look like in early childhood?: https://pinnacleblooms.org/ask/what-is-rett-syndrome-and-what-does-it-look-like-in-early-childhood

### Recognise signs & concerns
- Rett Syndrome Red Flags Warranting Referral: https://pinnacleblooms.org/ask/what-clinical-red-flags-for-rett-syndrome-warrant-referral-in-a-young-child
- Early indicators of Rett syndrome for paediatricians: https://pinnacleblooms.org/ask/what-early-indicators-of-rett-syndrome-should-a-paediatrician-watch-for
- When to refer suspected Rett syndrome for developmental therapy: https://pinnacleblooms.org/ask/when-should-a-doctor-refer-a-child-with-suspected-rett-syndrome-for-developmental-therapy
- Can Rett Syndrome Be Cured?: https://pinnacleblooms.org/ask/can-rett-syndrome-be-cured
- Can Rett Syndrome Be Prevented?: https://pinnacleblooms.org/ask/can-rett-syndrome-be-prevented
- Rett Syndrome in Boys: https://pinnacleblooms.org/ask/do-boys-show-rett-syndrome-differently
- Do girls show Rett Syndrome differently?: https://pinnacleblooms.org/ask/do-girls-show-rett-syndrome-differently
- Spotting Possible Rett Syndrome Early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-rett-syndrome-early
- Should I be worried my child might have Rett Syndrome?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-rett-syndrome
- Early Signs of Rett Syndrome: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-rett-syndrome
- Early signs of Rett syndrome in a 1-year-old boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-rett-syndrome-in-a-1-year-old-boy
- Early Signs of Rett Syndrome in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-rett-syndrome-in-a-1-year-old-girl

### Explore causes & influences
- Known contributing factors for Rett Syndrome: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-rett-syndrome-in-early-childhood
- Are boys more likely to have Rett Syndrome?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-rett-syndrome
- Are girls more likely to have Rett Syndrome?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-rett-syndrome
- Early Intervention for Rett Syndrome, UNCRPD & the SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-rett-syndrome-advance-un-child-rights-uncrpd-and-the-sdgs
- What Causes Rett Syndrome in Young Children?: https://pinnacleblooms.org/ask/what-causes-rett-syndrome-in-young-children
- Cost-effectiveness of early therapy for Rett Syndrome in young children: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-rett-syndrome-in-young-children
- Prevalence and Public-Health Burden of Rett Syndrome in India: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-rett-syndrome-among-young-children-in-india

### Understand assessment
- Standardised tools for assessing Rett syndrome in early childhood: https://pinnacleblooms.org/ask/which-standardised-tools-are-used-to-assess-rett-syndrome-in-early-childhood
- Rett Syndrome Diagnostic Pathway in Children Under 7: https://pinnacleblooms.org/ask/what-is-the-recommended-screening-and-diagnostic-pathway-for-rett-syndrome-in-children-under-7
- How AbilityScore Tracks Progress in a Child with Rett Syndrome: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-rett-syndrome
- How Rett Syndrome Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-rett-syndrome-assessed-in-a-young-child
- How Rett Syndrome Is Assessed in Children Under 7: https://pinnacleblooms.org/ask/how-is-rett-syndrome-assessed-in-children-under-7
- What an AbilityScore® of 0–100 means for a child with Rett Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-rett-syndrome
- What does an AbilityScore of 100–200 mean for a child with Rett Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-rett-syndrome
- What does an AbilityScore of 200–300 mean for a child with Rett Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-rett-syndrome
- AbilityScore 300–400 in Rett Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-rett-syndrome
- What an AbilityScore of 400–500 Means in Rett Syndrome: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-rett-syndrome
- What does an AbilityScore of 500–600 mean for a child with Rett Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-rett-syndrome
- What does an AbilityScore of 600–700 mean for a child with Rett Syndrome?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-rett-syndrome

### Explore therapy & support
- How Grandparents and Caregivers Can Support a Child with Rett Syndrome: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-rett-syndrome-day-to-day
- Can a Child with Rett Syndrome Attend a Mainstream School?: https://pinnacleblooms.org/ask/can-a-child-with-rett-syndrome-attend-a-mainstream-school
- Can a Child with Rett Syndrome Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-rett-syndrome-attend-a-regular-school
- Can a Child with Rett Syndrome Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-rett-syndrome-grow-up-to-live-independently
- Helping a Child with Rett Syndrome Take Part and Learn: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-rett-syndrome-take-part-and-learn
- Identifying and Supporting Children Under 7 with Rett Syndrome: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-rett-syndrome
- How can a teacher include a child with Rett Syndrome in a mainstream classroom?: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-rett-syndrome-in-a-mainstream-classroom
- How does therapy help a child with Rett Syndrome make progress?: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-rett-syndrome-make-progress
- How is Rett Syndrome diagnosed in a child?: https://pinnacleblooms.org/ask/how-is-rett-syndrome-diagnosed-in-a-child
- How is Rett Syndrome supported through therapy?: https://pinnacleblooms.org/ask/how-is-rett-syndrome-supported-through-therapy
- Rett Syndrome AbilityScore®: What to Do Next: https://pinnacleblooms.org/ask/my-child-with-rett-syndrome-has-an-abilityscore-of-0-100-what-should-we-do-next
- Rett Syndrome with an AbilityScore of 100–200: your next step: https://pinnacleblooms.org/ask/my-child-with-rett-syndrome-has-an-abilityscore-of-100-200-what-should-we-do-next

### At home & in everyday life
- How can I support my child with Rett Syndrome at home?: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-rett-syndrome-at-home