Recording autism and ADHD assessments in Mental Health Services Data set (MHSDS)
This technical guidance aims to provide detailed information as to how to record referrals in MHSDS at each step in the referral pathway for suspected:
- autism
- ADHD
- autism and ADHD
All providers of NHS-funded ADHD and autism services must submit data to the appropriate national dataset, as required under the NHS Standard Contract (unless otherwise stated).
If an autism and/or ADHD assessment is delivered as part of a neurodevelopmental assessment within an NHS-funded, mental health-commissioned service, it must be reported under the MHSDS.
We appreciate that not all services will follow the linear pathway outlined in this guidance, but we encourage everyone to record the following key stages in the pathway:
Referral and Primary Reason for Referral
Assessment
Diagnosis
Discharge or End of Referral
You should also record any relevant care contacts and care activities throughout the pathway.
Please note this guidance refers to MHSDS v6.0.
Autism referrals
Referral
When it becomes clear that a referral for autism assessment is required then please record 'Suspected Autism' as the primary reason for referral in clinical system, along with the date the referral was made.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS101Referral |
M101080 | PrimReasonReferralMH | 25 |
MHS101Referral |
M101D09 | RecordStartDate | Date of referral |
Please ensure all prior referrals in the pathway are recorded appropriately, that is, referrals to MDT teams or Mental Health Services.
Assessment
If the assessment is attended then update the care contact field to reflect this and the method of assessment, then add a care activity to indicate an autism assessment using SNOMED code '1085671000000109'.
You should also record the date of the assessment.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 01,02,04 OR 11 |
MHS201CareContact | M201090 | AttendStatus | 5 or 6 |
MHS201CareContact | M201010 | CareContDate | Date of assessment |
MHS202CareActivity | M202110 | Procedure | 1085671000000109 |
Note: If the assessment takes place over multiple sessions or dates, please record each individual assessment as above.
Diagnosis
If diagnosis of autism is confirmed, record autism as primary diagnosis and ensure the date of the diagnosis is recorded.
Note: The date should reflect when the diagnosis was given to the patient NOT when it is recorded in the system.
In MHSDS if using SNOMED this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 06 |
MHS604PrimDiag | M604010 | PrimDiag | AUTISM_COD |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
For a list of the most common SNOMED codes used for autism see appendix 1.
It is preferable to submit data using SNOMED codes, however if providers wish to submit a diagnosis of autism using ICD-10 codes this can be done using the following:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 02 |
MHS604PrimDiag | M604010 | PrimDiag | All F84.0 (excluding F84.2 and F84.4), F88, F89 |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
Further care contacts and activity
Record any other relevant care by updating care contact and care activity as required. For example, if a medication review is carried out, record medication review using the appropriate SNOMED code '1099461000000101'. A telephone call being made to the patient can be recorded within the care contact table. These are just examples of care contacts and activity that could be recorded – providers should continue to record additional care activity as has been done previously.
For example:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS202CareActivity | M202110 | Procedure | 1099461000000101 |
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 02 (for example, for telephone) |
MHS201CareContact | M201010 | CareContDate | Date |
Please note that further care contacts and activity can be recorded at any point in the process between referral and discharge.
Discharge
After assessment, diagnosis (or not being diagnosed) and all additional care contacts and activity, then record the discharge from the service when appropriate to do so. Discharge may not happen for some time after the assessment for multiple reasons.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS101Referral | M101090 | ServDischDate | Date |
MHS101Referral | M101110 | ServDischTime | Time |
ADHD referrals
Referral
When it becomes clear that a referral for ADHD is required, record 'Neurodevelopmental Conditions, excluding Autism' as primary reason for referral in clinical system and add 'Suspected ADHD' as a presenting complaint.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS101Referral | M101080 | PrimReasonReferrMH | 24 |
MHS609PresComp | M609020 | FindSchemeInUse | 04 |
MHS609PresComp | M609030 | PresComp | 1863681000000108 |
MHS101Referral | M101D09 | RecordStartDate | Date of referral |
Please ensure all prior referrals in the pathway are recorded appropriately, that is, referrals to MDT teams or Mental Health Services.
Assessment
If the assessment is attended then update the care contact field to reflect this and the method of assessment. Then add a care activity to indicate an ADHD assessment using SNOMED code '1914891000000100'.
You should also record the date of the assessment.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 01,02,04 OR 11 |
MHS201CareContact | M201090 | AttendStatus | 5 or 6 |
MHS201CareContact | M201010 | CareContDate | Date of assessment |
MHS202CareActivity | M202110 | Procedure | 1914891000000100 |
Note: If the assessment takes place over multiple sessions or dates, please record each individual assessment as above.
Diagnosis
If diagnosis of ADHD is confirmed then record ADHD as primary diagnosis and ensure the date of the diagnosis is recorded.
Note: The date should reflect when the diagnosis was given to the patient NOT when it is recorded in the system.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 06 |
MHS604PrimDiag | M604010 | PrimDiag | ADHD_COD |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
For a list of the most common SNOMED codes used for ADHD see appendix 1.
It is preferable to submit data using SNOMED codes, however if providers wish to submit a diagnosis of ADHD using ICD-10 codes this can be done using the following:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 02 |
MHS604PrimDiag | M604010 | PrimDiag | F90.0 |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
Further care contacts and activity
Record any other relevant care by updating care contact and care activity as required. For example, if a medication review is carried out record medication review using the appropriate SNOMED code '1099461000000101'. A telephone call being made to the patient can be recorded within the care contact table. These are just examples of care contacts and activity that could be recorded – providers should continue to record additional care activity as has been done previously.
For example:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS202CareActivity | M202110 | Procedure | 1099461000000101 |
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 02 (for example, for telephone) |
MHS201CareContact | M201010 | CareContDate | Date |
Please note that further care contacts and activity can be recorded at any point in the process between referral and discharge.
Discharge
After assessment, diagnosis (or not being diagnosed) and all additional care contacts and activity, then record the discharge from the service when appropriate to do so. Discharge may not happen for some time after the assessment for multiple reasons.
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS101Referral | M101090 | ServDischDate | Date |
MHS101Referral | M101110 | ServDischTime | Time |
Autism and ADHD referrals
Referral
When it becomes apparent there is a need for both an autism and ADHD assessment to be carried out please record 'Suspected Autism' as primary reason for referral in clinical system AND 'Neurodevelopmental Conditions, excluding Autism' as the other reason for referral, AND add 'Suspected ADHD' and 'Suspected Autism' as presenting complaints.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS101Referral | M101080 | PrimReasonReferrMH | 25 |
MHS103OtherReasonReferral | M103010 | OtherReasonReferMH | 24 |
MHS609PresComp | M609020 | FindSchemeInUse | 04 |
MHS609PresComp | M609030 | PresComp | 1863681000000108 |
MHS609PresComp | M609030 | PresComp | 401204006 |
MHS101Referral | M101D09 | RecordStartDate | Date of referral |
Note: The referring clinician may decide it is more appropriate to class ADHD as the primary reason for referral. If so then record 'Neurodevelopmental Conditions, excluding Autism' as the primary reason for referral in clinical system AND record 'Suspected Autism' as the other reason for referral, AND add 'Suspected ADHD' and 'Suspected Autism' as presenting complaints.
Please ensure all prior referrals in the pathway are recorded appropriately, that is, referrals to MDT teams or Mental Health Services.
Assessment
If the autism assessment is attended then update the care contact field to reflect this and the method of assessment, then add a care activity to indicate an autism assessment using SNOMED code '1085671000000109'.
You should also record the date of the assessment.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 01,02,04 OR 11 |
MHS201CareContact | M201090 | AttendStatus | 5 or 6 |
MHS201CareContact | M201010 | CareContDate | Date of assessment |
MHS202CareActivity | M202110 | Procedure | 1085671000000109 |
If the ADHD assessment is attended then update the care contact field to reflect this and the method of assessment, then and add a care activity to indicate an ADHD assessment using SNOMED code '1914891000000100'.
You should also record the date of the assessment.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS201CareContact | M201220 | ConsMechanismMH | 01,02,04 OR 11 |
MHS201CareContact | M201090 | AttendStatus | 5 or 6 |
MHS201CareContact | M201010 | CareContDate | Date of assessment |
MHS202CareActivity | M202110 | Procedure | 1914891000000100 |
Note: If either assessment takes place over multiple sessions or dates, please record each individual assessment as above.
Diagnosis
If a diagnosis is made for only one condition then follow autism or ADHD specific guidance.
If diagnosed with both autism and ADHD then record:
- autism as the primary diagnosis
- ADHD as a secondary diagnosis
Ensure the diagnosis date is recorded.
Note: The date should reflect when the diagnosis was given to the patient NOT when it is recorded in the system.
In MHSDS this means:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 06 |
MHS604PrimDiag | M604010 | PrimDiag | AUTISM_COD |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
MHS605SecDiag | M605913 | DiagSchemeInUse | 06 |
MHS605SecDiag | M605010 | SecDiag | ADHD_COD |
MHS605SecDiag | M605020 | CodedDiagTimestamp | Timestamp |
For a list of the most common SNOMED codes used for autism and ADHD see appendix 1.
The clinician may decide it is more appropriate to record ADHD as the primary diagnosis and autism as the secondary diagnosis, in which case the following would need to be recorded in MHSDS:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 06 |
MHS604PrimDiag | M604010 | PrimDiag | ADHD_COD |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
MHS605SecDiag | M605913 | DiagSchemeInUse | 06 |
MHS605SecDiag | M605010 | SecDiag | AUTISM_COD |
MHS605SecDiag | M605020 | CodedDiagTimestamp | Timestamp |
It is preferable to submit data using SNOMED codes, however if providers wish to submit a diagnosis of autism using ICD-10 codes this can be done using the following:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 02 |
MHS604PrimDiag | M604010 | PrimDiag | All F84.0 (excluding F84.2 and F84.4), F88, F89 |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
If providers wish to submit a diagnosis of ADHD using ICD-10 codes, this can be done using the following:
MHSDS table | MHSDS UID | Element name | National code |
---|---|---|---|
MHS604PrimDiag | M604913 | DiagSchemeInUse | 02 |
MHS604PrimDiag | M604010 | PrimDiag | F90.0 |
MHS604PrimDiag | M604020 | CodedDiagTimestamp | Timestamp |
Appendix 1
Autism SNOMED codes
Full list of all SNOMED codes relating to autism.
The most commonly used codes:
35919005 - Pervasive developmental disorder (disorder)
408856003 - Autistic disorder (disorder)
23560001 - Asperger's disorder (disorder)
ADHD SNOMED codes
Full list of all SNOMED codes relating to ADHD.
The most commonly used codes:
406506008 - Attention deficit hyperactivity disorder (disorder)
Last edited: 3 June 2025 11:46 am