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. 2016 Jul 31;2016:2656814. doi: 10.1155/2016/2656814

Table 4.

Codes and algorithms to identify diabetes complication severity index (DCSI) developed by Young et al. and modified by Chang et al.

Complications ICD-9-CM code DCSI score
Retinopathy
 Diabetic ophthalmologic disease 250.5x 1
 Background retinopathy 362.01 1
 Other retinopathies 362.1 1
 Retinal edema 362.83 1
 CSME 362.53 1
 Other retinal disorders 362.81, 362.82 1
 Proliferative retinopathy 362.02 2
 Retinal detachment 361.xx 2
 Blindness 369.xx.00–0.99 2
 Vitreous hemorrhage 379.23 2

Nephropathy
 Diabetic nephropathy 250.4 1
 Acute glomerulonephritis 580 1
 Nephrotic syndrome 581 1
 Hypertension, nephrosis 581.81 1
 Chronic glomerulonephritis 582 1
 Nephritis/nephropathy 583 1
 Chronic renal failure 585
 Renal failure NOS 586
 Renal insufficiency 593.9

Neuropathy
 Diabetic nephropathy 356.9, 250.6 1
 Amyotrophy 358.1 1
 Cranial nerve palsy 951.0, 951.1, 951.3 1
 Mononeuropathy 354.0–355.9 1
 Charcot's arthropathy 713.5 1
 Polyneuropathy 357.2 1

Cerebrovascular
 TIA 435 1
 Stroke 431, 433, 434, 436 2

Cardiovascular
 Atherosclerosis 440.xx 1
 Other IHD 411 1
 Angina pectoris 413 1
 Other chronic IHD 414 1
 Myocardial infarction 410 2
 Ventricular fibrillation, arrest 427.1, 427.3 2
 Atrial fibrillation, arrest 427.4, 427.5 2
 Other ASCVD 429.2 1
 Old myocardial infarction 412 2
 Heart failure 428 2
 Atherosclerosis, severe 440.23, 440.24 2
 Aortic aneurysm/dissection 441 2

Peripheral vascular disease
 Diabetic PVD 250.7 1
 Other aneurysms, LE 442.3 1
 PVD 443.81, 443.9 1
 Foot wound + complication 892.1 1
 Claudication, intermittent 443.9 1
 Embolism/thrombosis (LE) 444.22 2
 Gangrene 785.4 2
 Gas gangrene 0.4 2
 Ulcer of lower limbs 707.1 2

Metabolic
 Ketoacidosis 250.1 2
 Hyperosmolar 250.2 2
 Other comas 250.3 1

Note: the table is adapted from the previous algorithm defined by Young et al. and modified by Change et al. to identify the severity of diabetes using claims database. Severity index was based on a scale ranging from 0 to 2 for each complication as follows: 0 = no abnormality, 1 = some abnormality, and 2 = severe abnormality.

ASCVD, atherosclerotic cardiovascular disease; CSME, cystoid macular edema/degeneration; DCSI, diabetes complications severity index; IHD, ischemic heart disease; ICD-9-CM, international classification of diseases, ninth revision, clinical modification; LE, lower extremity; NOS, not otherwise specified; PVD, peripheral vascular disease; TIA, transient ischemic attack.