| Smoking status | | |
| Read Code | Description | Coding |
| 137. | Tobacco consumption | 2 |
| 1371. | Never smoked tobacco | 0 |
| 1372. | Trivial smoker <1 cigarette/day | 2 |
| 1373. | Light smoker 1–9 cigarettes/day | 2 |
| 1374. | Moderate smoker 10–19 cigarettes/day | 2 |
| 1375. | Heavy smoker 20–39 cigarettes/day | 2 |
| 1376. | Very heavy smoker 40+ cigarettes/day | 2 |
| 1377. | Ex-trivial smoker (<1/day) | 1 |
| 1378. | Ex-light smoker (1–9/day) | 1 |
| 1379. | Ex-moderate smoker (10–19/day) | 1 |
| 137A. | Ex-heavy smoker (20–39/day) | 1 |
| 137B. | Ex-very heavy smoker (40+/day) | 1 |
| 137C. | Keeps trying to stop smoking | 2 |
| 137D. | Admitted tobacco consumption untrue | SYSMIS |
| 137E. | Tobacco consumption unknown | SYSMIS |
| 137F. | Ex-smoker — amount unknown | 1 |
| 137G. | Trying to give up smoking | 2 |
| 137H. | Pipe smoker | 2 |
| 137I. | Passive smoker | SYSMIS |
| 137J. | Cigar smoker | 2 |
| 137K. | Stopped smoking | 1 |
| 137L. | Current non-smoker | 1 |
| 137M. | Rolls own cigarettes | 2 |
| 137N. | Ex-pipe smoker | 1 |
| 137O. | Ex-cigar smoker | 1 |
| 137P. | Cigarette smoker | 2 |
| 137Q. | Smoking started | 2 |
| 137R. | Current smoker | 2 |
| 137S. | Ex-smoker | 1 |
| 137Z. | Tobacco consumption NOS | 2 |
| Smoking cessation advice | | |
| Read Code | Description | Coding |
| 9OOZ. | Stop-smoking monitor administration NOS | 1 |
| 9OOA. | Stop-smoking monitor check done | 1 |
| 9OO9. | Stop-smoking monitoring deletion | 1 |
| 9OO7. | Stop-smoking monitor verbal interview | 1 |
| 9OO2. | Refuses stop-smoking monitor | 0 |
| 9OO1. | Attends stop-smoking monitor | 1 |
| 9OO. | Anti-smoking monitoring administration | 1 |
| 9N4M. | Did not attend smoking cessation advice | 0 |
| 8HTK. | Referral to stop-smoking clinic | 1 |
| 8H7i. | Referral to smoking cessation adviser | 1 |
| 8CAL. | Smoking cessation advice | 1 |
| 8B3Y.1 | Over-the-counter nicotine replacement therapy provided free |
| 8B2B. | Nicotine replacement therapy | 1 |
| 67H1. | Lifestyle advice re: smoking | 1 |
| 6791. | Health education — smoking | 1 |
| 13p5. | Smoking cessation programme start date | 1 |
| 13p1. | Smoking status at 4 weeks | 1 |
| 13p. | Smoking cessation milestones | 1 |