Table 1.

List of top 20 words learned from Labeled-LDA and its corresponding ICD-9-CM definition. Top 10 and bottom 10 entries are most and least frequent ICD-9-CM code in our dataset. Frequency of 111 ICD-9-CM codes are listed in Table 3.

ICD-9-CM	Definition (above) / Keywords (below)
401-405	Hypertensive disease
	tablet chest left mg po sig pt daily reason cabg artery sp refills disp namepattern clip pain date day coronary
420-429	Other forms of heart disease
	pt mg patient hr chest resp left lasix gi po stable pain gu neuro gtt bp bs day cv plan
270-279	Other metabolic and immunity disorders
	patient mg pt chest day left artery pain po stable coronary cabg status discharge history date post namepattern clip examination
410-414	Ischemic heart disease
	mg pt patient cath tablet pain left cardiac chest po hospital hr artery ccu discharge coronary history normal namepattern daily
249-259	Diseases of other endocrine glands
	pt patient mg insulin day blood hr po pain discharge units bs diabetes history namepattern hospital gtt admission pm doctor
510-519	Other diseases of respiratory system
	pt hr resp vent remains cc secretions thick care tube plan bs neuro trach cont mg gi noted yellow abg
996-999	Complications of surgical and medical care, not elsewhere classified
	pt tube resp left hr chest plan neuro remains cc vent bs cont reason noted clip abd gi sp care
280-285	Anemia
	pt tablet mg blood po hct sig daily discharge pm doctor namepattern md patient pain day history gi admission hospital
780-789	Symptoms
	patient pt contrast ct head left clip seizure reason normal pm date mri mg evidence hospital report history examination noted
580-589	Nephritis, nephrotic syndrome, and nephrosis
	renal clip reason left chest failure line final catheter radiology report examination date medical underlying patient pleural condition dialysis hd
317-319	Mental retardation
	pt tube noted chest cc resp patient retardation thick secretions care cont plan trach abd hr ct neuro telemetry coarse
E910-915	Accidents caused by submersion, suffocation, and foreign bodies
	pt patient esophageal food namepattern care perforation pain impaction oral secretions aspiration time esophagus white wife hospital discharge doctor intubated
950-957	Injury to nerves and spinal cord
	pt resp trach family care pain neuro injury plan vent intact hr gi skin thick secretions movement noted cord yellow
338-338	Pain
	pain pt mg tablet po sig doctor patient daily md blood ml iv namepattern discharge prn disp refills hr esophageal
905-909	Late effects of injuries, poisonings, toxic effects, and other external causes
	pt noted care pain intact wound skin cont vac family patient yellow vent drainage plan changed secretions abd resp remains
910-919	Superficial injury
	signal ml thoracic level ativan images foraminal spine fentanyl stenosis prn moderate pressure sbp seizures jump mild ligamentous abrasions ointment
E820-825	Motor vehicle non-traffic accidents
	pt trauma contrast family vehicle motor neuro mva head hr remains support intact skin ct trach mvc vent sp mri
890-897	Open wound of lower limb
	pt resp skin care support thick intact wound plan family secretions remains peep tube vent drainage hr stable cont bs
V20-29	Persons encountering health services in Circumstances related to Reproduction and development
	pt hr drainage abd continue continues support vent hct fluid family ativan mg husband cont skin cv resp white line
660-669	Complications occurring mainly in the course of labor and delivery
	pt patient blood pm uterine bleeding clip hct post reason vaginal date history abd artery units namepattern delivery discharge sp