Instruction Source: H54.8
Legal blindness, as defined in USA
Excludes 1 (Mutually Exclusive)
- legal blindness with specification of impairment level (H54.0-H54.7)
Clinical Notes
- If the extent of the visual field is taken into account, patients with a field no greater than 10 but greater than 5 around central fixation should be placed in category 3 and patients with a field no greater than 5 around central fixation should be placed in category 4, even if the central acuity is not impaired.
- The table below gives a classification of severity of visual impairment recommended by a WHO Study Group on the Prevention of Blindness, Geneva, 6-10 November 1972.
- The term 'low vision' in category H54 comprises categories 1 and 2 of the table, the term 'blindness' categories 3, 4 and 5, and the term 'unqualified visual loss' category 9.
Instruction Source: H54
Blindness and low vision
Excludes 1 (Mutually Exclusive)
Clinical Notes
- For definition of visual impairment categories see table below
Instruction Source: H53-H54
Visual disturbances and blindness (H53-H54)
Instruction Source: H00-H59
Diseases of the eye and adnexa
Excludes 2 (Not Included Here)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
Clinical Notes
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition