Skip to main content
A Singapore Government Agency Website How to identify
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites
Secure websites use HTTPS
Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Government officials will never ask you to transfer money or disclose bank log-in details over a phone call.

Call the 24/7 ScamShield Helpline at 1799 if you are unsure if something is a scam.

CMPB

Medical Fitness

Medical Fitness and what they mean

Last updated 13 April 2026

Update: How pre-enlistees are medically classified will be more precise to better characterise pre-enlistees' medical fitness. This will enable each and every national serviceman to contribute more meaningfully during their National Service.

Learn more about the announcement on Refreshed Medical Classification System (MCS).

Who will be affected by the refreshed Medical Classification System?

Pre-enlistees who enlist before Oct 2027 will continue to receive a PES status following medical screening.

Pre-enlistees enlisting from Oct 2027 onwards will be graded under the refreshed medical classification system. Medical screening for these pre-enlistees will commence from end-Jun 2026 onwards.

Refreshed Medical Classification System Infographic (Current and Future)

Medical fitness status

The medical fitness status is assigned based on your medical condition and is one of the considerations to determine your vocation suitability during your National Service (NS) period. Should your medical fitness status change due to your medical conditions during your NS period, you may be reassigned to a different vocation or appointment accordingly.

You will be notified to view details of your medical fitness results, including your medical exemptions via OneNS, about 1 month after your medical screening appointment, if you are not required to attend any further medical review.

Enlisting under PES or MCS?

Find out more about medical grading under PES or refreshed MCS and what it means for your National Service training.

Enlistment image

Physical Employment Standard (PES)

For pre-enlistees enlisting before October 2027

Enlistment photo

Refreshed Medical Classification System (MCS)

For pre-enlistees enlisting from October 2027 onwards