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I now found a UK document titled "Understanding Coding in Ophthalmology": uk-oa.co.uk/wp-content/….
On pages 11-12, the document gave an example of two ways to code for the same case. In one example the primary diagnosis was listed as H26.9 (cataract, unspecified) but in the other example the primary diagnosis was listed as H28.0 (diabeti…
I now found a UK document titled "Understanding Coding in Ophthalmology": https://uk-oa.co.uk/wp-content/uploads/2018/08/UKOA_Publications_Coding_Background_to_Coding_for_Ophthalmologists_Aug_2018.pdf.
On pages 11-12, the document gave an example of two ways to code for the same case. In one example the primary diagnosis was listed as H26.9 (cataract, unspecified) but in the other example the primary diagnosis was listed as H28.0 (diabetic cataract). And next a note said: "By simply recording that this is a diabetic cataract, rather than just a cataract, and by recording the two systemic conditions (vascular dementia and congestive cardiac failure) the hospital is paid more."