Production code number

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A production code number, also known as the production code (PC) or episode code, is an alphanumeric designation used to uniquely identify episodes within a television series. As each studio can freely generate its own PC format, it cannot be used universally to identify the show and episode.

While, in general, television episodes are filmed in the order they are intended to be aired in, there are circumstances in which this is not the case. In these instances, the production codes can be useful in determining the writers' original intentions.

Some "stand-alone" shows, such as The Simpsons, Law & Order or SpongeBob SquarePants, may air episodes in radically different order from how they are produced, because character development and continuity are not major aspects of production. The airing order may in the end be decided by the network, based on ratings, sweeps months, or other networks' competition.

Other, more serialized series, like Desperate Housewives, will air all of their episodes in order.

In some rare cases, shows will film episodes out of order to accommodate guest stars' schedules, or to work around main stars' movie schedules. A good example of this is The X-Files, which filmed episodes out of order in its fifth and sixth seasons to accommodate the shooting schedules of main stars Gillian Anderson and David Duchovny.

20th Television:
ABB – Buffy the Vampire Slayer
ABC – Millennium
ABD – Dharma & Greg
ABE – King of the Hill
ABF – The Simpsons
ABK – That's Life (1998 TV series)
ABR – Getting Personal
ABZ – Two Guys and a Girl
ACG – Strange World (TV series)
ACH – Holding the Baby (American TV series)
ACV – Futurama
ACW – Living in Captivity
ACX – Family Guy
ADA – Roswell (TV series)
ADC – Harsh Realm
AEB – The Lone Gunmen
AEJ – Yes, Dear
AES – Reba
AFF – 24 (TV series)
AFP – Inside Schwartz
AGE – Firefly (TV series)
AGK – Still Standing
AHM – Wonderfalls
AHQ – The Brotherhood of Poland, New Hampshire
APS – The Cleveland Show
ASA – Bob's Burgers
AXH – Bordertown (American TV series)
AYA – Son of Zorn
AYE – Minority Report (TV series)
AZF – Wayward Pines
AZT – The Mick (TV series)
LAZ – Duncanville (TV series)
LBW – The Great North

Warner Bros. and Cartoon Network:
640 – Ben 10
669 – Ben 10
680 – Ben 10: Alien Force (season 1)
689 – Ben 10: Alien Force (season 2)
692 – Adventure Time (season 1)
696 – Ben 10: Ultimate Alien (season 1)
697 – Regular Show
1002 – Adventure Time (season 2)
1003 – Ben 10: Ultimate Alien (season 2)
1004 – Regular Show (season 2)
1008 – Adventure Time (season 3 and 4)
1009 – Regular Show (season 3)
1012 – Regular Show (season 4)
1014 – Adventure Time (season 5)
1017 – Regular Show (season 5)
1018 – Clarence (American TV series)
1019 – Uncle Grandpa
1020 – Steven Universe (season 1)
1025 – Adventure Time (season 6)
1026 – Steven Universe (season 1)
1029 – Regular Show (season 6)
1033 – We Bare Bears (season 1)
1031 – Steven Universe (season 2 and 3)
1034 – Adventure Time (season 7)
1035 – Regular Show (season 7)
1039 – We Bare Bears (season 2)
1040 – Steven Universe (season 4)
1042 – Adventure Time (season 8 and 9)
1043 – Regular Show (season 8)
1044 – OK K.O.! Let's Be Heroes (season 1)
1049 – We Bare Bears (season 3)
1053 – Steven Universe (season 5)
1054 – Adventure Time (season 10)
1059 – Craig of the Creek (season 1)
1064 – OK K.O.! Let's Be Heroes (season 2)
1071 – Craig of the Creek (season 2)
1072 – OK K.O.! Let's Be Heroes (season 3)
1084 – Victor and Valentino (season 2)
1091 – Craig of the Creek (season 3)
1100 – Victor and Valentino (season 3)
1105 – Craig of the Creek (season 4)
1119 – Craig of the Creek (season 5)

SpongeBob SquarePants Episodes:
2515 – Season 1
5571 – Season 2
5572 – Season 3
5574 – Season 4
151 – Season 5
193 – Season 6
223 – Season 7
268 – Season 8
325 – Season 9–12
340 – Season 13
351 – Season 14
361 – Season 15
369 – Season 16

Disney Television Animation:
206F – Fish Hooks
211P – Mickey Mouse Clubhouse
224J – Jungle Junction
231S – Sofia the First
345W – Wander Over Yonder
474S – Star vs. the Forces of Evil
482M – Mickey Mouse (2013)
502R – Randy Cunningham: 9th Grade Ninja
513A – Elena of Avalor
522T – The 7D
618G – Gravity Falls
621D – DuckTales
624J – Kick Buttowski: The Daredevil Suburbian
631D – Phineas and Ferb
647B – Big City Greens
668A – Amphibia
714O – The Owl House
717K – Kiff
755P – Penn Zero: Part Time Hero
876T – Tron Uprising

The Big Valley:
63xx – Season 1
70xx – Season 2
71xx – Season 3
72xx – Season 4

• General format for network and cable shows produced by both CBS Studios and Universal Television is SYEE, where S is the variable-letter show identifier, Y is the season number and E is a two-digit episode number during that season. The production code is only used on both CBS and NBC.^[1]
• 20th Television format for free-to-air network produced shows is YSSSEE, where Y is the season identifier from 1 to Z, S is the three-letter show identifier and E is a two-digit episode number during that season.^[1] Off-network produced shows after May 2011 is SSSYEE, previous codes were only numerical values in the form of S-Y-E. These are burned in on the end copyright slate; the letters I, O, Q, and U are not allowed to be used in the production code; however, The Simpsons defeated this rule in late 2020 as its 32nd season predominantly uses the letter Q, because it has already cycled through every other digit.^[2]
• Warner Bros. format for picked up weekly produced shows is SSSSEE, where S is the combined four-character alphanumeric show and season identifier and E is a two-digit episode number. Daily produced shows use YYYEEE, where Y is a three-digit yearly count and E is a three-digit episode count during that year. Pilots use a six-digit episode number. These are burned in on the end copyright slate. During 2016, the weekly produced and pilot formats were retired from the end slate for just the tape/reel location format of [T|U]SS.SSSEE, where S is numeric only.
• Paramount Pictures format for weekly produced shows is SSSSS-EEE, where S is a five-digit show number and E is a three-digit episode number. Daily produced shows use SE, where S is the variable-letter show identifier and E is a variable sequential-digit episode count. Only the episode portion is used on internal marketing material and feed slates.
• The Price Is Right, which is from RTL Group's Fremantle brand, has used in daytime episodes a code WWWEx, where W is the week, E is the episode number for that week (1 of 5), and "D" for daytime episodes from September 4, 1972, to May 24, 1996, "K" for daytime episodes from May 27, 1996, to November 23, 2022 (after the 1,000th week of production), and "L" for daytime episodes after the 2,000th week of production (episodes produced since October 3, 2022, broadcast since December 5, 2022) ^[3]
• A number of Canadian, Australian, French, Korean, Italian, Irish, Singaporean, Indonesian, Malay and Middle East produced shows use the ISAN format, which is burned in on the end copyright slate.
• A variables and numbers of German, Spanish, Swiss, Thai, Indian, Chinese and Taiwanese produced shows use the ITU and ISAN format, which is burned in on the end copyright slate.
• ABS-CBN Studios and GMA Network the production reference code number for drama series uses a code of SSSS-L, with the S for four-digit numbers and L for one-digit variables for ABS-CBN Studios and the production reference code number for drama series uses a code of NNNN-NN-L, with the N for six-digit numbers and L for one-digit variable for GMA Network.
• TV5 the production reference code number for all of series uses a code of SSSSS-L, with the S for five-digit numbers and L for one-digit variable except I, O, Q, U, X and Z.
• TV Asahi the production reference code number for anime series of episodes uses a code of SSSSS-SEL, with the S for six-digit numbers, E for one-digit dates or months for calendar and L for one-digit variable.
• Fuji TV the production reference code number for anime series of episodes uses a code of SSSSSSS with the S for seven-digit numbers
• Pokémon (TV series) uses for Japanese anime series codes for LLSSS for L for two-digit variables and S for three-digit variables (ex. EP001, AG001, DP001, BW001, XY001, SM001, JN001, HZ001 or SS001) within a direction and creation for OLM (studio) in the origin of Pokémon (TV series) has been for copyright and production references.
• Doctor Who uses a code for L for one-digit variable in 1963–1966, LL for two-digit variables in 1966–1969, LL for three-digit variables in 1970–1974, SL for S for one-digit number and L for one-digit variable in 1974–1989 and revival in 2005 using code S.S for S for two-digit variables and the specialists for X for one-digit special numbers only broadcasting from BBC.