regex101: Date extraction

Pro

Non-Capturing Group(?:[- /])?

?repeats the group contents below at most once:

Character Class[- /]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:\d{1,2})?

?repeats the group contents below at most once:

\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times

Non-Capturing Group(?:[- /])?

?repeats the group contents below at most once:

Character Class[- /]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)?

?repeats the group contents below at most once:

1st AlternativeJan

Janthe literal text Jan (case sensitive)

2nd AlternativeFeb

Febthe literal text Feb (case sensitive)

3rd AlternativeMar

Marthe literal text Mar (case sensitive)

4th AlternativeApr

Aprthe literal text Apr (case sensitive)

5th AlternativeMay

Maythe literal text May (case sensitive)

6th AlternativeJun

Junthe literal text Jun (case sensitive)

7th AlternativeJul

Julthe literal text Jul (case sensitive)

8th AlternativeAug

Augthe literal text Aug (case sensitive)

9th AlternativeSep

Septhe literal text Sep (case sensitive)

10th AlternativeOct

Octthe literal text Oct (case sensitive)

11th AlternativeNov

Novthe literal text Nov (case sensitive)

12th AlternativeDec

Decthe literal text Dec (case sensitive)

Non-Capturing Group(?:[a-z]*)?

?repeats the group contents below at most once:

Character Class[a-z]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Non-Capturing Group(?:[- \./,]*)

Character Class[- \./,]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Non-Capturing Group(?:\d{1,2})

\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times

Non-Capturing Group(?:[- /,sthnd]+)?

?repeats the group contents below at most once:

Character Class[- /,sthnd]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

nthe literal n (110₁₀ / 156₈ / 6E₁₆) (case sensitive)

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

\d{2,4}a Unicode decimal digit, repeated between 2 and 4 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

(?:[- /])?(?:\d{1,2})?(?:[- /])?(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)?(?:[a-z]*)?(?:[- \./,]*)(?:\d{1,2})(?:[- /,sthnd]+)?\d{2,4}

New

.Per 7/06/79 Movement D/O note:\n
4, 5/18/78 Patient's thoughts about current su...
10/05/97 CPT Code: 90791: No medical services\n

04/20/2009
04/20/09
4/20/09
4/3/09
Mar-20-2009
Mar 20, 2009
March 20, 2009
Mar. 20, 2009
Mar 20 2009
20 Mar 2009
20 March 2009
20 Mar. 2009
20 March, 2009
Mar 20th, 2009
Mar 21st, 2009
Mar 22nd, 2009
.10 Sep 2004
(DPSH 5/04/74)
Feb 2009
February 2009
Sep 2009
Oct 2010
6/2008
12/2009
2009
2010

03/25/93 Total time of visit (in minutes):\n
6/18/85 Primary Care Doctor:\n
sshe plans to move as of 7/8/71 In-Home Servic...
7 on 9/27/75 Audit C Score Current:\n
2/6/96 sleep studyPain Treatment Pain Level (N...
10/24/89 CPT Code: 90801 - Psychiatric Diagnos...
3/7/86 SOS-10 Total Score:\n
(4/10/71)Score-1Audit C Score Current:\n
(5/11/85) Crt-1.96, BUN-26; AST/ALT-16/22; WBC...
4/09/75 SOS-10 Total Score:\n
8/01/98 Communication with referring physician...
1/26/72 Communication with referring physician...
5/24/1990 CPT Code: 90792: With medical servic...
1/25/2011 CPT Code: 90792: With medical servic...
4/12/82 Total time of visit (in minutes):\n
1; 10/13/1976 Audit C Score, Highest/Date:\n
4, 4/24/98 Relevant Drug History:\n
) 59 yo unemployed w referred by Urgent Care f...
7/21/98 Total time of visit (in minutes):\n
10/21/79 SOS-10 Total Score:\n
3/03/90 CPT Code: 90792: With medical services\n
2/11/76 CPT Code: 90792: With medical services\n
07/25/1984 CPT Code: 90791: No medical services\n
4-13-82 Other Child Mental Health Outcomes Sca...
9/22/89 CPT Code: 90792: With medical services\n
9/02/76 CPT Code: 90791: No medical services\n
9/12/71 [report_end]\n
10/24/86 Communication with referring physicia...
                             ...                        
8/16/92 SOS-10 Total Score:\n
10/05/97 CPT Code: 90791: No medical services\n
07/18/2002 CPT Code: 90792: With medical servi...
9/22/82 Total time of visit (in minutes):\n
2/24/74 SOS-10 Total Score:\n
(2/03/78) TSH-0.90 Activities of Daily Living ...
2/11/2006 CPT Code: 90791: No medical services\n
Pt is a 21 year old, single, heterosexual iden...
PET Scan (DPSH 5/04/74): 1) Marked hypometabol...
7/20/2011 [report_end]\n
6/17/95 Total time of visit (in minutes):\n
6/10/72 SOS-10 Total Score:\n
nPt denied use to me but endorsed use on 10/16...
12/15/92 CPT Code: 90801 - Psychiatric Diagnos...
12/8/97 SOS-10 Total Score:\n
4/05/89 Primary Care Doctor:\n
12/04/87 SOS-10 Total Score:\n
4 (6/20/77)Audit C Score Current:\n
see 4/27/2006 consult note Dr. GuevaraWhat fac...
07/17/92 CPT Code: 90791: No medical services\n
12/22/98 CPT Code: 90801 - Psychiatric Diagnos...
10/02/96 Age:\n
11/05/90 CPT Code: 90792: With medical services\n
5/04/77 CPT Code: 90792: With medical services\n
2/27/96 Communication with referring physician...
s The patient is a 44 year old married Caucasi...
.10 Sep 2004 - Intake at EEC for IOP but did n...
see above and APS eval of 26 May 1982 Social H...
Tbooked for intake appointment at Sierra Vista...
06 May 1972 SOS-10 Total Score:\n

Maz 2009
90792
SOS-10
Social 
but
11