Australia Medicare Card Identifier

Identifies Australian Medicare card numbers using Func_australian_medical_account_number validation. Filters same-digit sequences. Requires corroborative health-scheme keywords for reliable detection.

Type

regex

Engine

universal

Confidence

medium

Confidence justification

Medium confidence: eight-digit numbers are common. Validator function and health-scheme keywords significantly improve accuracy. AllDigitsSameFilter removes trivial matches.

Detection quality

Mixed

Jurisdictions

au

Regulations

HRIPA (Cth), IPA 2009 (Qld), My Health Records Act 2012 (Cth), NDB Scheme (Cth), Privacy Act 1988 (Cth)

Frameworks

ISO 27001, ISO 27701, SOC 2

Data categories

phi, health, government-id

Scope

narrow

Risk rating

8

Platform compatibility

Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b\d{8}\b

Corroborative evidence keywords

health scheme, health fund, provider number, patient ID, medical account, Medibank, bulk billing, health cover, medicare, medicare number, medicare card, medicare no, health insurance number

Proximity: 300 characters

Should match

• 12345678 — Eight-digit Medicare provider number format
• 98765432 — Eight-digit medical account number

Should not match

• 1234567 — Seven digits, too short
• 123456789 — Nine digits, too long
• 11111111 — All same digits filtered

Known false positives

• Generic eight-digit reference numbers in non-health contexts. Mitigation: Require health-scheme keywords in proximity. AllDigitsSameFilter removes trivial matches.

References

• Australia Medical Account Number entity definition - Microsoft Learn