Please enable JavaScript to use this web application.
Regular
Expressions
101
Social
Donate
Info
Regex Editor
Community Patterns
Account
Regex Quiz
Settings
Order By
Most Recent
Most upvotes
Most downvotes
Highest Score
Lowest Score
Filter by Flavor
PCRE2 (PHP >=7.3)
PCRE (PHP <7.3)
ECMAScript (JavaScript)
Python
Golang
Java 8
.NET 7.0 (C#)
Rust
Sponsors
There are currently no sponsors.
Become a sponsor today!
Community Patterns
Search among 18,000 community submitted regex patterns...
1
Current Procedural Terminology (CPT) codes, incl optional modifiers
PCRE2 (PHP >=7.3)
CPT is a uniform coding system consisting of descriptive terms and identifying codes used primarily to identify medical services and procedures furnished by physicians and other health care professionals for which they bill public or private health insurance programs. It is a numeric coding system ...
Submitted by
Richard Baxter
-
5 months ago
(Last modified 5 months ago)
1
FL 16 - Discharge Hour FL 17 - Patient Discharge Status
PCRE2 (PHP >=7.3)
FL 16 - Discharge Hour FL 17 - Patient Discharge Status
Submitted by
John (Jacko) Logan
-
5 months ago
1
Multiple Severity-Diagnostic Related Groups (MS-DRGs)
PCRE2 (PHP >=7.3)
Multiple Severity-Diagnostic Related Groups (MS-DRGs)
Submitted by
anonymous
-
5 months ago
1
Multiple Severity-Diagnostic Related Groups (MS-DRGs)
PCRE2 (PHP >=7.3)
Multiple Severity-Diagnostic Related Groups (MS-DRGs)
Submitted by
john (jacko) logan
-
5 months ago
1
All zeros after first digit
ECMAScript (JavaScript)
Number string where only zeros follow the first digit
Submitted by
anonymous
-
5 months ago
1
ICD-10-CM (Clinical Modification) Codes
PCRE2 (PHP >=7.3)
The regex should match ICD-10-CM codes, including those with the optional up to 4 characters suffix used in some codes. NOTE: This regex assumes the letters can be mixed case.
Submitted by
Richard Baxter
-
5 months ago
(Last modified 5 months ago)
1
ICD-9-CM Format
PCRE2 (PHP >=7.3)
ICD-9-CM Format
Submitted by
john (jacko) logan
-
5 months ago
1
Occurrence Codes (US Healthcare Billing)
PCRE2 (PHP >=7.3)
Possibly used in Form Locator (FL) 32-35 in the UB-04 form. The CMS write (in their R81CP document):- "Occurrence and occurrence span codes are mutually exclusive. Occurrence codes have values from 01 through 69 and A0 through L9. Occurrence span codes have values from 70 through 99 and M0 thro...
Submitted by
Richard Baxter
-
5 months ago
(Last modified 5 months ago)
1
ICD-9-CM PCS Format
PCRE2 (PHP >=7.3)
ICD-9-CM PCS Format
Submitted by
john (jacko) Logan
-
5 months ago
1
Videos that start with [....]
PCRE2 (PHP >=7.3)
^.\\\[[\w\d]?]*?..{4,}$
Submitted by
pvtpyle1299
-
5 months ago
1
IPv4, IPv6 and CIDR ranges validation pattern
ECMAScript (JavaScript)
This regex can be used to validate IPv4 and IPv6 addresses as well as CIDR ranges
Submitted by
Simon
-
5 months ago
(Last modified 3 months ago)
1
Markdown Masked links
ECMAScript (JavaScript)
matches for any markdown Masked link text detected `` not detected (not valid(on most platforms))
Submitted by
yande
-
5 months ago
1
VALID_IP
Python
VALID_IP checker
Submitted by
GSV
-
5 months ago
(Last modified 5 months ago)
1
Validating any URLs
PCRE2 (PHP >=7.3)
for JS regular expression to validate any http|https|ftp|IPv4 address, supported: authority** username:password (example https://username:password@example.com); port** :0-65565 (example https://example.com:80); query/queries** ?c=1 or ?c=1&d=x (example https://example.com/main.php?c=1&d=x);...
Submitted by
anonymous
-
5 months ago
1
RFC3986 URI-reference
ECMAScript (JavaScript)
Regexp to match URI-reference using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI-reference regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986
Submitted by
Niemiets
-
5 months ago
(Last modified 4 months ago)
1
find user name in linkedin profile
PCRE2 (PHP >=7.3)
linkedin.com/company/name/ finds name
Submitted by
anonymous
-
5 months ago
(Last modified 5 months ago)
1
RFC3986 URI
ECMAScript (JavaScript)
Regexp to match URI using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986
Submitted by
Niemiets
-
5 months ago
(Last modified 4 months ago)
1
credit number hider
PCRE2 (PHP >=7.3)
Hides credit card numbers from 13-16 digits
Submitted by
anonymous
-
5 months ago
1
Blurring 13-16 digits
PCRE2 (PHP >=7.3)
Blurring 13-16 digits
Submitted by
anonymous
-
5 months ago
1
JWT pattern
ECMAScript (JavaScript)
handles both JWS (3 segments) and JWE (5 segments) remove the ending (?:(?:... to handle JWS only segments 1+2 are expected tp start with e[yw], an encoded start of JSON object {" or {\n remove/extend it to match used token structure or make it even more restrictive (ey[IJ]|ewo) to match encod...
Submitted by
iki
-
5 months ago
(Last modified 4 months ago)
1
...
814
815
816
817
818
...
900
Community Library Entry
-1
Regular Expression
PCRE2 (PHP >=7.3)
/
(?<year>
\d
{4}
)
(?<month>
\d
{1,2}
)
(?<day>
\d
{1,2}
)
/
gm
Open regex in editor
Description
Convert numbers-only YYYYMMDD date to dash delineated YYYY-MM-DD
Submitted by
anonymous
-
2 years ago