Smoking Read Codes
| READ Code | Description | Mapping |
| 137.. | Tobacco consumption | Code Not Accepted |
| 1371 | Never smoked tobacco | Non Smoker |
| 1372 | Trivial smoker - < 1 cig/day | Smoker |
| 1373 | Light smoker - 1-9 cigs/day | Smoker |
| 1374 | Moderate smoker - 10-19 cigs/d | Smoker |
| 1375 | Heavy smoker - 20-39 cigs/day | Smoker |
| 1376 | Very heavy smoker - 40+cigs/d | Smoker |
| 1377 | Ex-trivial smoker (<1/day) | Ex Smoker |
| 1378 | Ex-light smoker (1-9/day) | Ex Smoker |
| 1379 | Ex-moderate smoker (10-19/day) | Ex Smoker |
| 137A. | Ex-heavy smoker (20-39/day) | Ex Smoker |
| 137B. | Ex-very heavy smoker (40+/day) | Ex Smoker |
| 137C. | Keeps trying to stop smoking | Smoker |
| 137D. | Admitted tobacco cons untrue | Code Not Accepted |
| 137E. | Tobacco consumption unknown | Code Not Accepted |
| 137F. | Ex-smoker - amount unknown | Ex Smoker |
| 137G. | Trying to give up smoking | Smoker |
| 137H. | Pipe smoker | Smoker |
| 137I. | Passive smoker | Code Not Accepted |
| 137J. | Cigar smoker | Smoker |
| 137K. | Stopped smoking | Ex Smoker |
| 137L. | Current non-smoker | Non Smoker |
| 137M. | Rolls own cigarettes | Smoker |
| 137N. | Ex pipe smoker | Ex Smoker |
| 137O. | Ex cigar smoker | Ex Smoker |
| 137P. | Cigarette smoker | Smoker |
| 137Q. | Smoking started | Smoker |
| 137R. | Current smoker | Smoker |
| 137S. | Ex smoker | Ex Smoker |
| 137Z. | Tobacco consumption NOS | Smoker |
| E2510 | Tobacco dependence-unspecified | Smoker |
| E2511 | Tobacco dependence-continuous | Smoker |
| E2512 | Tobacco dependence-episodic | Smoker |
| E2513 | Tobacco depend. - in remission | Ex Smoker |
| E251z | Tobacco dependence NOS | Smoker |
| ZPSA10 | Current Smoker NFD | Smoker |