Malabsorption due to gastrointestinal surgery
Metadata
- Coding system
- SNOMED CT (UK Clinical Edition)
- Coding system release
- 40.2.0
- Organisation
- OpenSAFELY
- Codelist ID
- opensafely/malabsorption-due-to-gastrointestinal-surgery
- Version ID
- 4c26d322
- Number of codes included
- 47
About
Description
This codelist aims to identify gastrointestinal surgeries resulting in malabsorption of vitamin D. It is developed for the purpose of the vitamin D study (indications for vitamin D testing/ prescribing).
Methodology
Search terms: Roux-en-Y Gastric Bypass, sleeve gastrectomy, duodenal bypass, duodenal switch, gastric bypass, ileal bypass, pancreatic diversion.
The aim was to identify specific surgical procedures most likely to lead to vit. D deficiency: sleeve gastrectomy (esp. Biliopancreatic diversion with duodenal switch (BPD/DS)) and gastric bypass (esp. RYGB). Related weight-loss procedures, especially those affecting duodenal and ileal absorption (e.g. duodenal bypass liner), were included. Similarly, procedures where the duodenum is bypassed (as this is where most vit D. absorption occurs) were included.
Large umbrella terms likely to include these surgeries (e.g. gastrojejustomy) were included; other terms were excluded.
Gastric banding was excluded, as BOMMS guidelines state that following gastric banding: "Routine monitoring is usually not required unless the patient has symptomatic vitamin D deficiency".
References
Signed off by
- Arina Tamborska, (July 21, 2025)
- Andrew Brown, (Aug. 18, 2025)
Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.
We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.
| code | term |
|---|---|
| 1060721000000106 | Single anastomosis duodeno-ileal bypass with sleeve gastrectomy |
| 1264335004 | Gastrojejunostomy and insertion of stent using endoscopic ultrasonography guidance |
| 1340181009 | Laparoscopic duodenal switch |
| 173747005 | Roux-en-Y gastrojejunostomy |
| 173748000 | Bypass of stomach by anastomosis of stomach to transposed jejunum |
| 173750008 | Conversion to anastomosis of stomach to transposed jejunum |
| 173751007 | Conversion from previous anastomosis of stomach to transposed jejunum |
| 173755003 | Gastroenterostomy: [NEC] or [named variants] |
| 173857001 | Bypass of duodenum by anastomosis of stomach to jejunum |
| 18692006 | Bypass gastroenterostomy |
| 226991000000105 | Duodenal switch |
| 227001000000104 | Sleeve gastrectomy and duodenal switch |
| 227081000000109 | Sleeve gastrectomy NEC |
| 227131000000109 | Attention to connection of stomach to transposed jejunum |
| 227151000000102 | Attention to connection of stomach to jejunum |
| 235281005 | Anterior gastrojejunostomy |
| 235282003 | Anastomosis of stomach to ileum |
| 256841000000105 | Sleeve gastrectomy and duodenal switch |
| 256851000000108 | Sleeve gastrectomy NEC |
| 257121000000108 | Duodenal switch |
| 265365007 | Bypass of stomach by anastomosis of stomach to duodenum |
| 279001000000105 | Laparoscopic sleeve gastrectomy |
| 289411000000108 | Laparoscopic sleeve gastrectomy |
| 30803004 | Printen and Mason operation, high gastric bypass |
| 314593003 | Posterior gastrojejunostomy |
| 329281000119107 | History of sleeve gastrectomy |
| 341741000000101 | Laparoscopic gastric bypass |
| 358575006 | Gastroduodenostomy |
| 359529008 | Jaboulay operation, gastroduodenostomy |
| 371161000000100 | Laparoscopic gastric bypass |
| 377191000000102 | [V]Presence of gastric bypass |
| 426738005 | Duodenal switch |
| 427074001 | Laparoscopic sleeve gastrectomy |
| 427980007 | Sleeve gastrectomy with duodenal switch |
| 433024005 | Gastrojejunostomy using fluoroscopic guidance |
| 442338001 | Bypass of stomach |
| 443906008 | Bypass of stomach with short limb Roux-en-Y gastroenterostomy |
| 468249005 | Duodenal-jejunal bypass liner |
| 468989007 | Duodenal bypass liner |
| 491521000000100 | [V]Presence of gastric bypass |
| 49245001 | Bypass gastrojejunostomy |
| 698450007 | History of bypass of stomach |
| 708629005 | Laparoscopic bypass gastrojejunostomy |
| 708983005 | Laparoscopic bypass of stomach |
| 72971003 | Gastrojejunostomy with vagotomy |
| 762461000000109 | Reversal of duodenal switch |
| 87604009 | Sleeve resection of stomach |
This page shows the search terms that were used to build the codelist. Concepts that match the search terms, but which were excluded, are in faint grey.
Pancreatic Diversion
Included 0 out of 0 matching concepts.
Show matching concepts
Roux-en-Y Gastric Bypass
Included 5 out of 5 matching concepts.
Show matching concepts
-
Bypass of stomach by anastomosis of stomach to transposed jejunum (
173748000) -
Bypass of stomach with short limb Roux-en-Y gastroenterostomy (
443906008) -
Conversion from previous anastomosis of stomach to transposed jejunum (
173751007) -
Conversion to anastomosis of stomach to transposed jejunum (
173750008) -
Roux-en-Y gastrojejunostomy (
173747005)
Sleeve gastrectomy
Included 13 out of 13 matching concepts.
Show matching concepts
-
Duodenal switch (
426738005) -
History of sleeve gastrectomy (
329281000119107) -
Laparoscopic duodenal switch (
1340181009) -
Laparoscopic sleeve gastrectomy (
279001000000105) -
Laparoscopic sleeve gastrectomy (
427074001) -
Laparoscopic sleeve gastrectomy (
289411000000108) -
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (
1060721000000106) -
Sleeve gastrectomy NEC (
227081000000109) -
Sleeve gastrectomy NEC (
256851000000108) -
Sleeve gastrectomy and duodenal switch (
227001000000104) -
Sleeve gastrectomy and duodenal switch (
256841000000105) -
Sleeve gastrectomy with duodenal switch (
427980007) -
Sleeve resection of stomach (
87604009)
duodenal bypass
Included 2 out of 2 matching concepts.
Show matching concepts
-
Duodenal bypass liner (
468989007) -
Duodenal-jejunal bypass liner (
468249005)
duodenal switch
Included 8 out of 10 matching concepts.
Show matching concepts
-
Duodenal switch (
426738005) -
Duodenal switch (
226991000000105) -
Duodenal switch (
257121000000108) -
Laparoscopic duodenal switch (
1340181009) -
Reversal of duodenal switch (
762461000000109) -
Reversal of duodenal switch (
447892004) -
Reversal of duodenal switch (
779621000000101) -
Sleeve gastrectomy and duodenal switch (
227001000000104) -
Sleeve gastrectomy and duodenal switch (
256841000000105) -
Sleeve gastrectomy with duodenal switch (
427980007)
gastric bypass
Included 29 out of 34 matching concepts.
Show matching concepts
-
Anastomosis of stomach to ileum (
235282003) -
Anterior gastrojejunostomy (
235281005) -
Attention to connection of stomach to jejunum (
227151000000102) -
Attention to connection of stomach to transposed jejunum (
227131000000109) -
Bypass gastroenterostomy (
18692006) -
Bypass gastrojejunostomy (
49245001) -
Bypass of duodenum by anastomosis of stomach to jejunum (
173857001) -
Bypass of esophagus using stomach (
173587003) -
Bypass of stomach (
442338001) -
Bypass of stomach by anastomosis of stomach to duodenum (
265365007) -
Bypass of stomach by anastomosis of stomach to transposed jejunum (
173748000) -
Bypass of stomach with short limb Roux-en-Y gastroenterostomy (
443906008) -
Cholecystenterostomy with gastroenterostomy (
45753003) -
Conversion from previous anastomosis of stomach to transposed jejunum (
173751007) -
Conversion to anastomosis of stomach to transposed jejunum (
173750008) -
Esophagogastrostomy, antesternal or antethoracic (
11127003) -
Gastroduodenostomy (
358575006) -
Gastroenterostomy - no gastrectomy (
287834004) -
Gastroenterostomy: [NEC] or [named variants] (
173755003) -
Gastrojejunostomy and insertion of stent using endoscopic ultrasonography guidance (
1264335004) -
Gastrojejunostomy using fluoroscopic guidance (
433024005) -
Gastrojejunostomy with vagotomy (
72971003) -
History of bypass of stomach (
698450007) -
Jaboulay operation, gastroduodenostomy (
359529008) -
Laparoscopic bypass gastrojejunostomy (
708629005) -
Laparoscopic bypass of stomach (
708983005) -
Laparoscopic gastric bypass (
341741000000101) -
Laparoscopic gastric bypass (
371161000000100) -
Posterior gastrojejunostomy (
314593003) -
Printen and Mason operation, high gastric bypass (
30803004) -
Pylorostomy (
57245002) -
Roux-en-Y gastrojejunostomy (
173747005) -
[V]Presence of gastric bypass (
377191000000102) -
[V]Presence of gastric bypass (
491521000000100)
ileal bypass
Included 1 out of 3 matching concepts.
Show matching concepts
-
Revision of jejunoileal bypass (
10088002) -
Single anastomosis duodeno-ileal bypass with sleeve gastrectomy (
1060721000000106) -
Take-down of jejunoileal bypass (
61600000)