Mind your sequencing to get all the case mix points you're entitled to. Under the prospective payment system, sequencing impacts the number of nonroutine supplies points you'll earn for reporting diagnoses in the seven selected case mix categories. When a diagnosis from one of these categories is the focus of your care and reported as primary in M1020, you're eligible for more points than when the same diagnosis is reported in M1022. The difference breaks down as follows, reports coding expert Trish Twombly with Foundation Management Services in Denton, Texas: Cancer diagnoses 172.x (Malignant melanoma of skin) 173.x (Other malignant neoplasm of skin) Listed as primary: 15 NRS points Listed as secondary: 4 NRS points Diabetes diagnoses 250.8x (Diabetes with other specified manifestations) paired with manifestation 707.1x (Ulcer of lower limbs except pressure ulcer). 249.8x (Secondary diabetes mellitus with other specified manifestations) paired with manifestation 707.1x (Ulcer of lower limbs except pressure ulcer). Listed as primary: 20 NRS points Listed as secondary: 0 NRS points for diabetic ulcer, however the ulcer code gains 13 points as a Skin 2 code. Skin 1 diagnoses Trauma (open) wounds/burns Complicated surgical wounds: Dehiscence Infection Foreign body accidentally left during procedure Non-healing Persistent fistula Listed as primary: 19-23 NRS points Listed as secondary: 8-15 NRS points Ortho 1 diagnoses 897 (Traumatic amputation of leg[s] [complete] [partial]) Listed as primary: 19 NRS points Listed as secondary: 8 NRS points Skin II diagnoses Abscess Cellulitis Gangrene Ulcers Listed as primary: 11-16 NRS points Listed as secondary: 7-13 NRS points Tracheostomy V55.0 (Attention to tracheostomy) Note: You must be doing something to or about the ostomy to earn NRS points. Listed as primary: 23 NRS points Listed as secondary: 23 NRS points Note: You will earn 0 NRS points if the ostomy is infected because you can't report a V code when there is a complication. Urostomy/Cystostomy V55.5 (Attention to cystostomy) V55.6 (Attention to other artificial opening of urinary tract) Note: You must be doing something to or about the ostomy to use the V55 code to earn NRS points. Cystostomy listed as Primary or Secondary: 16 points Urostomy listed as Primary or Secondary: 24 points. Note: You will earn 0 NRS points if the ostomy is infected because you can't report a V code when there is a complication.