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ICD-9-CMInternational Classification of Diseases, Ninth Revision, Clinical Modification
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We assigned patients to infections with one of four MDROs using ICD-9-CM discharge diagnosis codes (see Table 1).
Using the LHID, we selected adult patients aged ≥20 years who were newly diagnosed with UC (ICD-9-CM 710.2) and who were followed up between 2000 and 2013.
All three states used hospital discharge data to identify potential cases using infant ICD-9-CM diagnosis codes 779.5 (drug withdrawal syndrome in a newborn) and 760.72 (noxious influences affecting fetus or newborn via placenta or breast milk, narcotics) and ICD-10-CM codes P96.1 (drug withdrawal, infant of dependent mother) and P04.49 (newborn affected by maternal use of other drugs of addiction), as well as other infant and maternal diagnosis codes of interest to the state.
The comorbidities discussed for DLB patients were diabetes mellitus (DM) (ICD-9-CM code 250), hypertension (HTN) (ICD-9-CM codes 401-405), hyperlipidemia (ICD-9-CM code 272), coronary artery disease (CAD) (iCD-9-CM codes 410-414), congestive heart failure (CHF) (ICD-9-CM code 428), and chronic kidney disease (CKD) (ICD-9-CM code 585).
DSM-5 includes ICD-9-CM and ICD-10-CM codes for each DSM-5 disorder (for example, the ICD9-CM code for schizophrenia is 295.x; the ICD-10-CM code is F20.9).
* common codes for the specialty, such as excessive, frequent, and irregular menstruation; disorders of the breast; and inflammation of the vagina and vulva, with corresponding ICD-9-CM codes
The five-digit number in boldface is the ICD-9-CM code that will be in effect until the end of September.
Structural Differences between ICD-9-CM and ICD-10-CM Diagnostic Codes -ICD-9-CM ICD-10-CM 3 to 5 digits 3 to 7 digits Digit 1, numeric Digit 1, alpha Digits 2 to 5, numeric Digit 2, numeric Digits 3 to 7, alpha or numeric ICD-9-CM indicates International Classification of Diseases, Ninth Revision, Clinical Modification, ICD-10-CM International Classification of Diseases, Tenth Revision, Clinical Modification.
ICD-10-CM is much improved compared to ICD-9-CM. For example, in ICD-9-CM coding scheme, a single code, 756.79, was assigned for both omphalocele and gastroschisis.
We identified 1416 incident patients pathologically diagnosed with KC (ICD-9-CM codes 189.0, 189.1, or 189.2) from the LHID2000 who received their diagnoses in ambulatory care visits or hospitalizations between January 2002 and December 2009.
ICD-9-CM consists of approximately 17,000 codes for medical diagnoses and procedures.
* Evaluate existing contracts with third-party payers and determine whether they are ICD-9-CM code-based, DRG-based, or based on some other methodology.