Mental illness impacts millions of Americans every year. Despite the growing awareness of mental health issues, many patients face stigma and insecurity around their experiences and diagnoses.
According to the National Alliance of Mental Illness (NAMI), about 1 in 5 American adults experiences mental illness every year -- more than 46 million people. Roughly 1 in 25 American adults, or 11.2 million people annually, experiences mental illness that severely interferes with major life activities.
Definitive Healthcare tracked more than 12.7 million inpatient mental health diagnoses at hospitals in 2018. Below, we've listed the top 10 mental health diagnoses by total volume and by volume for primary diagnoses only.
Top 10 Mental Health Diagnoses (Primary and Secondary)
|Rank ||ICD-10 Code ||ICD-10 Description ||Total Diagnoses || |
Avg. Charge per Claim
|1. ||F329 ||Major depressive disorder, single episode, unspecified ||1,219,751 ||$2,817 |
|2. ||F419 ||Anxiety disorder, unspecified ||1,174,335 ||$1,019 |
|3. ||F17210 ||Nicotine dependence, cigarettes, uncomplicated ||1,047,672 ||$261 |
|4. ||F17200 ||Nicotine dependence, unspecified, uncomplicated ||442,585 ||$219 |
|5. ||F0390 ||Unspecified dementia without behavioral disturbance ||422,476 ||$3,125 |
|6. ||F332 ||Major depressive disorder, recurrent severe without psychotic features ||382,329 ||$4,875 |
|7. ||F319 ||Bipolar disorder, unspecified ||364,438 ||$4,805 |
|8. ||F1010 ||Alcohol abuse, uncomplicated ||362,381 ||$1,532 |
|9. ||F411 ||Generalized anxiety disorder ||323,854 ||$938 |
|10. ||F1020 ||Alcohol dependence, uncomplicated ||269,772 ||$4,116 |
Fig 1 Data from Definitive Healthcare's platform of all-payor claims analytics, featuring primary and secondary inpatient diagnoses for hospitals. Claims intelligence is from calendar year 2018.
Of the top ten most-commonly diagnosed mental health issues, alcohol and nicotine dependence took four combined spots, and a total of 2.1 million diagnoses. Depressive and anxiety disorders each took two spots, with 1.6 million and nearly 1.5 million diagnoses, respectively.
The most costly diagnosis is ICD-10 code F332, "Major depressive disorder, recurrent severe without psychotic features," with an average cost per claim of nearly $4,900. Least expensive by average episode cost is ICD-10 code F17200, "Nicotine dependence, unspecified, uncomplicated," at $219.
Top 10 Mental Health Diagnoses (Primary Only)
|Rank ||ICD-10 Code ||ICD-10 Description ||Total Primary Diagnoses ||Avg. Charge per Claim |
|1. ||F332 ||Major depressive disorder, recurrent severe without psychotic features ||314,658 ||$4,875 |
|2. ||F329 ||Major depressive disorder, single episode, unspecified ||183,451 ||$2,817 |
|3. ||F250 ||Schizoaffective disorder, bipolar type ||130,369 ||$7,747 |
|4. ||F319 ||Bipolar disorder, unspecified ||111,869 ||$4,805 |
|5. ||F209 ||Schizophrenia, unspecified ||104,433 ||$5,688 |
|6. ||F10239 ||Alcohol dependence with withdrawal, unspecified ||95,410 ||$8,548 |
|7. ||F29 ||Unspecified psychosis not due to a substance or known physiological condition ||86,347 ||$3,400 |
|8. ||F331 ||Major depressive disorder, recurrent, moderate ||85,870 ||$2,548 |
|9. ||F333 ||Major depressive disorder, recurrent, severe with psychotic symptoms ||80,216 ||$6,187 |
|10. ||F1020 ||Alcohol dependence, uncomplicated ||78,737 ||$4,116 |
Fig 2 Data from Definitive Healthcare's platform of all-payor claims analytics, featuring primary inpatient diagnoses for hospitals. Claims intelligence is from calendar year 2018.
The two most common mental health diagnoses by primary diagnosis only are "Major depressive disorder, recurrent severe without psychotic features" (ICD-10 code F332) and "Major depressive disorder, single episode, unspecified" (ICD-10 code F329). Though both of these appear in the list of most-common diagnoses when including both primary and secondary diagnoses, the latter ranks first when including secondary diagnoses. This indicates that a singe major depressive episode is more likely to be diagnosed in conjunction with another condition, which would likely be the reason for a patient's initial visit.
Like in the previous list, alcohol dependence takes two spots, one including withdrawal symptoms. The conditions have a combined 173,000 diagnoses. Schizophrenia and bipolar disorders take three of the top ten spots with 345,000 combined diagnoses. Unspecified psychosis also makes the list with 86,000 diagnoses.
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