These codes will capture asthma ever, not just current asthma. These codes are not intended to be mandatory, but are to be used as a starting point for the identification of asthma in routine EHR. Each study may differ in the sensitivity and specificity of the coding required.
For those interested in further discrimination of asthma phenotypes, we refer you to Nissen et al. 2019.
F. Nissen, Douglas, I. J., Mullerova, H., Pearce, N., Bloom, C. I., Smeeth, L., and Quint, J. K., ?Clinical profile of predefined asthma phenotypes in a large cohort of UK primary care patients (Clinical Practice Research Datalink)?, J Asthma Allergy, vol. 12, pp. 7-19, 2019.
Validation of Read Codes for the Identification of COPD in CPRD
Quint et al. validated a set of Read codes for the identification of COPD in CPRD in 2014. Using diagnostic codes alone, the positive predictive value (PPV) was 86.5% (77.5?92.3%). Requiring a diagnostic code, spirometry measures, and specific medication increased PPV to 89.4% (80.7?94.5%) but reduced case numbers by 10%.
Publications from 2019 using validated Read codes from Nissen et al. 2017
F. Nissen, Douglas, I. J., Mullerova, H., Pearce, N., Bloom, C. I., Smeeth, L., and Quint, J. K., ?Clinical profile of predefined asthma phenotypes in a large cohort of UK primary care patients (Clinical Practice Research Datalink)?, J Asthma Allergy, vol. 12, pp. 7-19, 2019."
C. I. Bloom, Walker, S., and Quint, J. K., ?Inadequate specialist care referrals for high-risk asthma patients in the UK: an adult population-based cohort 2006-2017?, J Asthma, pp. 1-7, 2019."
D. Dedman, Coton, S. J., Ghosh, R. E., Meeraus, W., Crim, C., Harvey, C., Amelio, J., and Landis, S. H., ?Treatment Patterns of New Users of Fluticasone Furoate/Vilanterol in Asthma and COPD in UK Primary Care: Retrospective Cohort Study?, Pulmonary Therapy, vol. 5, pp. 81-95, 2019."
Publications from 2019 using Read codes from QOF
P. Rockenschaub, Jhass, A., Freemantle, N., Aryee, A., Rafiq, M., Hayward, A., and Shallcross, L., ?Opportunities to reduce antibiotic prescribing for patients with COPD in primary care: a cohort study using electronic health records from the Clinical Practice Research Datalink (CPRD)?, J Antimicrob Chemother, 2019."
Wellcome Open Research
| Code | Description | SNOMED CT Description ID | SNOMED CT Concept ID | Quality and Outcomes Framework Read Codes 2017/18 | Validated Non-Specific Asthma Read Codes Nissen et al. 2017 | Validated Specific Asthma Read Codes Nissen et al. 2017 |
|---|---|---|---|---|---|---|
| 13Y4.00 | Asthma society member | 251191012 | 161105008 | Y | ||
| 14B4.00 | H/O: asthma | 251716013 | 161527007 | Y | ||
| 14Ok000 | At risk severe asthma exacerbation | 2460311000000112 | 966011000000109 | |||
| 173A.00 | Exercise induced asthma | 52467014 | 31387002 | Y | Y | |
| 173c.00 | Occupational asthma | 95786019 | 57607007 | Y | ||
| 173d.00 | Work aggravated asthma | 95786019 | 57607007 | Y | ||
| 178..00 | Asthma trigger | 1780194017 | 400987003 | Y | ||
| 1780.00 | Aspirin induced asthma | 2159273015 | 407674008 | Y | ||
| 1781.00 | Asthma trigger - pollen | 1739151000000116 | 340911000000109 | Y | ||
| 1782.00 | Asthma trigger - tobacco smoke | 1739161000000118 | 340921000000103 | Y | ||
| 1783.00 | Asthma trigger - warm air | 1739171000000113 | 340931000000101 | Y | ||
| 1784.00 | Asthma trigger - emotion | 306001000000115 | 201211000000107 | Y | ||
| 1785.00 | Asthma trigger - damp | 305981000000116 | 201201000000105 | Y | ||
| 1786.00 | Asthma trigger - animals | 636211000000110 | 201051000000101 | Y | ||
| 1787.00 | Asthma trigger - seasonal | 305591000000111 | 201041000000104 | Y | ||
| 1788.00 | Asthma trigger - cold air | 305961000000113 | 201191000000108 | Y | ||
| 1789.00 | Asthma trigger - respiratory infection | 305571000000112 | 201031000000108 | Y | ||
| 178A.00 | Asthma trigger - airborne dust | 1739131000000111 | 340891000000106 | Y | ||
| 178B.00 | Asthma trigger - exercise | 1739141000000119 | 340901000000107 | Y | ||
| 1O2..00 | Asthma confirmed | 1780388018 | 401193004 | Y | ||
| 388t.00 | Royal College of Physicians asthma assessment | 536221000000110 | 302331000000106 | Y | ||
| 388t000 | Royal College Physician asthma assessment 3 question score | 2900370011 | 448003001 | Y | ||
| 38B8.00 | Severe asthma exacerbation risk assessment | 2460351000000111 | 966031000000101 | |||
| 38DL.00 | Asthma control test | 2839948011 | 443117005 | Y | ||
| 38DT.00 | Asthma control questionnaire | 3637798014 | 763077003 | Y | ||
| 38DV.00 | Mini asthma quality of life questionnaire | 3643315013 | 763695004 | Y | ||
| 38QM.00 | Childhood Asthma Control Test | 2328051000000114 | 905301000103 | |||
| 661M100 | Asthma self-management plan agreed | 2117771000000117 | 811921000000103 | Y | ||
| 661N100 | Asthma self-management plan review | 2115631000000117 | 810901000000102 | Y | ||
| 663..11 | Asthma monitoring | 411877015 | 275908000 | Y | ||
| 663J.00 | Airways obstruction reversible | 264536010 | 170627008 | |||
| 663N.00 | Asthma disturbing sleep | 264540018 | 170631002 | Y | ||
| 663N000 | Asthma causing night waking | 264541019 | 170632009 | Y | ||
| 663N100 | Asthma disturbs sleep weekly | 264542014 | 170633004 | Y | ||
| 663N200 | Asthma disturbs sleep frequently | 264543016 | 170634005 | Y | ||
| 663O.00 | Asthma not disturbing sleep | 264544010 | 170635006 | Y | ||
| 663O000 | Asthma never disturbs sleep | 264545011 | 170636007 | Y | ||
| 663P.00 | Asthma limiting activities | 264546012 | 170637003 | Y | ||
| 663P000 | Asthma limits activities 1 to 2 times per month | 1722581000000112 | 771981000000105 | Y | ||
| 663P100 | Asthma limits activities 1 to 2 times per week | 1722651000000119 | 772011000000107 | Y | ||
| 663P200 | Asthma limits activities most days | 1722731000000116 | 772051000000106 | Y | ||
| 663Q.00 | Asthma not limiting activities | 264547015 | 170638008 | Y | ||
| 663U.00 | Asthma management plan given | 2157868010 | 406162001 | Y | ||
| 663V.00 | Asthma severity | 264551018 | 170642006 | Y | ||
| 663V000 | Occasional asthma | 1208971012 | 370220003 | Y | ||
| 663V100 | Mild asthma | 1208969012 | 370218001 | Y | ||
| 663V200 | Moderate asthma | 1208970013 | 370219009 | Y | ||
| 663V300 | Severe asthma | 1208972017 | 370221004 | Y | ||
| 663W.00 | Asthma prophylactic medication used | 264556011 | 170647000 | Y | ||
| 663d.00 | Emergency asthma admission since last appointment | 3033971010 | 708358003 | Y | ||
| 663e.00 | Asthma restricts exercise | 264566015 | 170655007 | Y | ||
| 663e000 | Asthma sometimes restricts exercise | 264567012 | 170656008 | Y | ||
| 663e100 | Asthma severely restricts exercise | 264568019 | 170657004 | Y | ||
| 663f.00 | Asthma never restricts exercise | 264569010 | 170658009 | Y | ||
| 663h.00 | Asthma - currently dormant | 456164012 | 312454005 | Y | ||
| 663j.00 | Asthma - currently active | 456163018 | 312453004 | Y | ||
| 663m.00 | Asthma accident and emergency attendance since last visit | 3034176014 | 708373002 | Y | ||
| 663n.00 | Asthma treatment compliance satisfactory | 1208977011 | 370226009 | Y | ||
| 663p.00 | Asthma treatment compliance unsatisfactory | 1208976019 | 370225008 | Y | ||
| 663q.00 | Asthma daytime symptoms | 1212342016 | 373899003 | Y | ||
| 663r.00 | Asthma causes night symptoms 1 to 2 times per month | 1208957016 | 370205009 | Y | ||
| 663s.00 | Asthma never causes daytime symptoms | 1208960011 | 370208006 | Y | ||
| 663t.00 | Asthma causes daytime symptoms 1 to 2 times per month | 1208954011 | 370202007 | Y | ||
| 663u.00 | Asthma causes daytime symptoms 1 to 2 times per week | 1208955012 | 370203002 | Y | ||
| 663v.00 | Asthma causes daytime symptoms most days | 1208956013 | 370204008 | Y | ||
| 663w.00 | Asthma limits walking up hills or stairs | 1208959018 | 370207001 | Y | ||
| 663x.00 | Asthma limits walking on the flat | 1208958014 | 370206005 | Y | ||
| 663y.00 | Number of asthma exacerbations in past year | 490425015 | 366874008 | Y | ||
| 66Y5.00 | Change in asthma management plan | 1484905010 | 390872009 | Y | ||
| 66Y9.00 | Step up change in asthma management plan | 1484910014 | 390877003 | Y | ||
| 66YA.00 | Step down change in asthma management plan | 1484911013 | 390878008 | Y | ||
| 66YC.00 | Absent from work or school due to asthma | 1484953014 | 390921001 | Y | ||
| 66YE.00 | Asthma monitoring due | 1484970018 | 390940007 | Y | ||
| 66YJ.00 | Asthma annual review | 1488421017 | 394700004 | Y | ||
| 66YK.00 | Asthma follow-up | 1488422012 | 394701000 | Y | ||
| 66YP.00 | Asthma night-time symptoms | 1488722011 | 395022009 | Y | ||
| 66YQ.00 | Asthma monitoring by nurse | 1780378019 | 401182001 | Y | ||
| 66YR.00 | Asthma monitoring by doctor | 1780379010 | 401183006 | Y | ||
| 66Yp.00 | Asthma review using Roy Colleg of Physicians three questions | 1658781000000113 | 754061000000100 | Y | ||
| 66Yq.00 | Asthma causes night time symptoms 1 to 2 times per week | 1722421000000110 | 771901000000100 | Y | ||
| 66Yr.00 | Asthma causes symptoms most nights | 1722501000000119 | 771941000000102 | Y | ||
| 66Ys.00 | Asthma never causes night symptoms | 2956621015 | 473391009 | Y | ||
| 66Yu.00 | Number days absent from school due to asthma in past 6 month | 2116171000000118 | 811151000000105 | Y | ||
| 66Yz000 | Asthma management plan declined | 2297651000000118 | 892301000000100 | |||
| 66Yz500 | Telehealth asthma monitoring | 3301824014 | 715191006 | |||
| 679J.00 | Health education - asthma | 1780336013 | 401135008 | Y | ||
| 679J000 | Health education - asthma self management | 1176501000000114 | 527191000000104 | Y | ||
| 679J100 | Health education - structured asthma discussion | 1176541000000112 | 527211000000100 | Y | ||
| 679J200 | Health education - structured patient focused asthma discuss | 1176581000000116 | 527231000000108 | Y | ||
| 8791.00 | Further asthma - drug prevent. | 282486014 | 182724005 | Y | ||
| 8793.00 | Asthma control step 0 | 282488010 | 182726007 | Y | ||
| 8794.00 | Asthma control step 1 | 282489019 | 182727003 | Y | ||
| 8795.00 | Asthma control step 2 | 282490011 | 182728008 | Y | ||
| 8796.00 | Asthma control step 3 | 282491010 | 182729000 | Y | ||
| 8797.00 | Asthma control step 4 | 282492015 | 182730005 | Y | ||
| 8798.00 | Asthma control step 5 | 282493013 | 182731009 | Y | ||
| 8B3j.00 | Asthma medication review | 1488436019 | 394720003 | Y | ||
| 8CE2.00 | Asthma leaflet given | 283029017 | 183099005 | Y | ||
| 8CMA000 | Patient has a written asthma personal action plan | 1176461000000114 | 527171000000103 | Y | ||
| 8CR0.00 | Asthma clinical management plan | 3516216012 | 736056000 | Y | ||
| 8H2P.00 | Emergency admission, asthma | 3082895019 | 183478001 | Y | ||
| 8HTT.00 | Referral to asthma clinic | 2533402016 | 415265005 | Y | ||
| 9N1d.00 | Seen in asthma clinic | 285239019 | 185242005 | Y | ||
| 9N1d000 | Seen in school asthma clinic | 1769451000000116 | 791401000000104 | |||
| 9N4Q.00 | DNA - Did not attend asthma clinic | 138771000000113 | 89581000000109 | Y | ||
| 9NI8.00 | Asthma outreach clinic | 300371000000111 | 198971000000102 | Y | ||
| 9NNX.00 | Under care of asthma specialist nurse | 2974554010 | 698509001 | Y | ||
| 9OJ..00 | Asthma monitoring admin. | 1564941000000112 | 713701000000108 | Y | ||
| 9OJ..11 | Asthma clinic administration | 1564951000000110 | 713711000000105 | Y | ||
| 9OJ1.00 | Attends asthma monitoring | 285727014 | 185728001 | Y | ||
| 9OJ2.00 | Refuses asthma monitoring | 3638224019 | 763221007 | Y | ||
| 9OJ3.00 | Asthma monitor offer default | 285729012 | 185730004 | Y | ||
| 9OJ4.00 | Asthma monitor 1st letter | 285730019 | 185731000 | Y | ||
| 9OJ5.00 | Asthma monitor 2nd letter | 285731015 | 185732007 | Y | ||
| 9OJ6.00 | Asthma monitor 3rd letter | 285734011 | 185734008 | Y | ||
| 9OJ7.00 | Asthma monitor verbal invite | 285735012 | 185735009 | Y | ||
| 9OJ8.00 | Asthma monitor phone invite | 285736013 | 185736005 | Y | ||
| 9OJA.00 | Asthma monitoring check done | 405055018 | 270442000 | Y | ||
| 9OJA.11 | Asthma monitored | 405054019 | 270442000 | Y | ||
| 9OJB.00 | Asthma monitoring invitation SMS (short message service) text message | 2379671000000115 | 928451000000107 | |||
| 9OJB000 | Asthma monitoring SMS (short message service) text message first invitation | 2445551000000116 | 959401000000101 | |||
| 9OJB100 | Asthma monitoring SMS (short message service) text message second invitation | 2445611000000116 | 959421000000105 | |||
| 9OJB200 | Asthma monitoring SMS (short message service) text message third invitation | 2445651000000117 | 959441000000103 | |||
| 9OJC.00 | Asthma monitoring invitation email | 2379801000000110 | 92851000000107 | |||
| 9OJZ.00 | Asthma monitoring admin.NOS | 1564941000000112 | 713701000000108 | Y | ||
| 9Q21.00 | Patient in asthma study | 285891014 | 185940009 | Y | ||
| 9hA..00 | Exception reporting: asthma quality indicators | 1568361000000118 | 715801000000103 | Y | ||
| 9hA1.00 | Excepted from asthma quality indicators: Patient unstable | 1569831000000113 | 717291000000103 | Y | ||
| 9hA2.00 | Excepted from asthma quality indicators: Informed dissent | 1569041000000114 | 716491000000100 | Y | ||
| H312000 | Chronic asthmatic bronchitis | 301450011 | 195949008 | Y | Y | |
| H33..00 | Asthma | 301485011 | 195967001 | Y | Y | |
| H33..11 | Bronchial asthma | 301480018 | 195967001 | Y | Y | |
| H330.00 | Extrinsic (atopic) asthma | 1493645010 | 389145006 | Y | Y | |
| H330.11 | Allergic asthma | 1483199016 | 389145006 | Y | Y | |
| H330.12 | Childhood asthma | 350147016 | 233678006 | Y | ||
| H330.13 | Hay fever with asthma | 350153016 | 233683003 | Y | Y | |
| H330.14 | Pollen asthma | 350154010 | 233683003 | Y | Y | |
| H330000 | Extrinsic asthma without status asthmaticus | 104872017 | 63088003 | Y | Y | |
| H330011 | Hay fever with asthma | 350153016 | 233683003 | Y | Y | |
| H330100 | Extrinsic asthma with status asthmaticus | 2722231000000112 | 1086701000000102 | Y | Y | |
| H330111 | Extrinsic asthma with asthma attack | 3083642013 | 708093000 | Y | Y | |
| H330z00 | Extrinsic asthma NOS | 2648327010 | 424643009 | Y | Y | |
| H331.00 | Intrinsic asthma | 396114013 | 266361008 | Y | Y | |
| H331.11 | Late onset asthma | 350148014 | 233679003 | Y | Y | |
| H331000 | Intrinsic asthma without status asthmaticus | 21390015 | 12428000 | Y | Y | |
| H331100 | Intrinsic asthma with status asthmaticus | 2722261000000119 | 1086711000000100 | Y | Y | |
| H331111 | Intrinsic asthma with asthma attack | 3032866010 | 708094006 | Y | Y | |
| H331z00 | Intrinsic asthma NOS | 396114013 | 266361008 | Y | Y | |
| H332.00 | Mixed asthma | 301509017 | 195977004 | Y | ||
| H333.00 | Acute exacerbation of asthma | 3032747019 | 708038006 | Y | ||
| H334.00 | Brittle asthma | 338238011 | 225057002 | Y | Y | |
| H335.00 | Chronic asthma with fixed airflow obstruction | 2240591000000119 | 866881000000101 | Y | Y | |
| H33z.00 | Asthma unspecified | 301485011 | 195967001 | Y | Y | |
| H33z000 | Status asthmaticus NOS | 3511368015 | 734904007 | Y | Y | |
| H33z011 | Severe asthma attack | 3033029011 | 708090002 | Y | Y | |
| H33z100 | Asthma attack | 3032734012 | 708038006 | Y | Y | |
| H33z111 | Asthma attack NOS | 301485011 | 195967001 | Y | Y | |
| H33z200 | Late-onset asthma | 350148014 | 233679003 | Y | Y | |
| H33zz00 | Asthma NOS | 3032734012 | 708038006 | Y | Y | |
| H33zz11 | Exercise induced asthma | 52467014 | 31387002 | Y | Y | |
| H33zz12 | Allergic asthma NEC | 1483199016 | 389145006 | Y | Y | |
| H35y600 | Sequoiosis (red-cedar asthma) | 39131015 | 23315001 | Y | ||
| H35y700 | Wood asthma | 497732010 | 56968009 | Y | ||
| H3B..00 | Asthma-chronic obstructive pulmonary disease overlap syndrome | 3046456013 | 10692761000119107 | Y | ||
| H47y000 | Detergent asthma | 69311016 | 41553006 | Y |
| Code | Description | Description | Quality and Outcomes Framework Read Codes 2017/18 | Validated Non-Specific Asthma Read Codes Nissen et al. 2017 | Validated Specific Asthma Read Codes Nissen et al. 2017 | Read v2 Code |
|---|