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Using 5-byte Read codes
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The structure of READ codes allows almost anything to be coded in the
computer record. It does mean, however, that we must be rigid about our coding
structure to allow complete and accurate database search results
Record should be coded according to the following structure
| Symptoms |
Chapter 1 |
| Examination |
Chapter 2 |
| Investigations |
Chapters 3-8 |
| Administrative |
Chapter 9 |
| Diagnoses |
Chapters A-S |
| Medication |
Chapters a to s |
- Note that READ codes are case sensitive (ie "a" is NOT the same
as "A")
- For "working" diagnoses when a definitive diagnosis is not yet
established, use chapter R (symptoms signs and ill-defined conditions)
rather than chapter 1 (chapter 1 should only be used for describing
symptoms, whereas chapter R should be used for working diagnoses.
READ abbreviatons
| OS |
Other specified: |
Only use when a definitive code is not available (rare!). |
| NOS |
Not otherwise specified: |
Only use when a definitive code is not available (rare!). |
| EC |
Elsewhere classified: |
Classified elsewhere in code, usually referring to an
underlying cause of a particular disorder. |
| NEC |
Not elsewhere classified: |
No matching sub classification |
| SO |
Site of: |
For determining site of an operation. |
| D |
Diagnosis: |
Chapter R codes for working diagnoses when a specific
diagnosis is not yet ascertained. |
| M |
Morphology of neoplasms: |
Subchapter BB of READ codes. |
| V |
Supplementary factors influencing health status, but not
including illness: |
e.g. "normal pregnancy". |
You do not need to learn codes to use the Read code system (although it can
sometimes make it quicker to use). Type in the term which you wish to code, and
use the pick lists to focus in further. How quickly you reach your desired term
depends on what you type eg: for acute frontal sinusitis, you will get the
appropriate term more quickly by typing front than acute. Typing the first 3
letters often gives the quickest results.
READ code chapter headings
| Chapter |
Contents |
| 0 |
Occupations |
| 1 |
History/symptoms |
| 2 |
Examination/signs |
| 3 |
Diagnostic procedures |
| 4 |
Laboratory procedures |
| 5 |
Radiology/medical physics |
| 6 |
Preventative procedures |
| 7 |
Operations and procedures |
| 8 |
Other therapeutic procedures |
| 9 |
Administration |
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| Chapter |
Contents |
| A |
Infectious/parasitic diseases |
| B |
Neoplasms |
| C |
Endocrine/metabolic |
| D |
Blood diseases |
| E |
Mental disorders |
| F |
Nervous system/senses |
| G |
Circulatory system |
| H |
Respiratory system |
| J |
Digestive system |
| K |
Genito-urinary
system |
| L |
Pregnancy/childbirth/puerperium |
| M |
Skin/subcutaneous tissue |
| N |
Musculoskeletal |
| P |
Congenital anomalies |
| Q |
Perinatal conditions |
| R |
Ill-defined
conditions/working diagnoses |
| S |
Injury/poisoning |
| T |
Causes of injury/poisoning |
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