CCSR

Methods

Code on Github

The CCSR data mart implements AHRQ's Clinical Classifications Software Refined diagnosis and procedure grouper. This is a very commonly used tool to group ICD-10-CM and ICD-10-PCS diagnosis and procedure codes into higher-level categories. Full documentation for this grouper can be found on AHRQ's website via the link above.

Data Dictionary

long_condition_category

This model contains a mapping of individual condition ICD-10-CM diagnosis codes to the CCSR's clinically meaningful diagnosis categories. Each row represents a mapping of an ICD-10 code to a CCSR category. As each ICD-10 code may be mapped to up to 6 categories, it's expected that this table will output as many or more rows than the Tuva condition model. The model is equivalent to the CCSR's Output Option 1 - Vertical File Output.

Primary Keys:

• patient_id
• normalized_code
• ccsr_category

Foreign Keys:

• encounter_id
• claim_id

Column	Data Type	Description	Terminology

long_procedure_category

This model contains a mapping of individual condition ICD-10-PCS procedure codes to the CCSR's clinically meaningful procedure categories. Each row represents a mapping of an ICD-10 code to a CCSR category. The model is equivalent to the CCSR's Output Option 1 - Vertical File Output.

Primary Keys:

• patient_id
• normalized_code
• ccsr_category

Foreign Keys:

• encounter_id

Column	Data Type	Description	Terminology

singular_condition_category

This model contains only the CCSR's default category assignment for the ICD-10 code, and only for the first-listed ICD-10 code (diagnosis_code = 1).

Primary Keys:

• patient_id
• ccsr_category

Foreign Keys:

• encounter_id
• claim_id

Column	Data Type	Description	Terminology

Example SQL

Condition Count by Body System

select
      body_system
    , count(*)
from ccsr.singular_condition_category
group by body_system
order by count(*) desc;

Condition Count by CCSR Category

select
      ccsr_category_description
    , count(*)
from ccsr.singular_condition_category
group by ccsr_category_description
order by count(*) desc;

Procedure Count by Clinical Domain

select
      clinical_domain
    , count(*)
from ccsr.long_procedure_category
group by clinical_domain
order by count(*) desc;

Procedure Count by CCSR Category

select
      ccsr_category_description
    , count(*)
from ccsr.long_procedure_category
group by ccsr_category_description
order by count(*) desc;

Acute Inpatient Visits by CCSR Category and Body System

select
      p.ccsr_category
    , p.ccsr_category_description
    , p.ccsr_parent_category
    , p.body_system
    , count(*) as visit_count
    , sum(cast(e.paid_amount as decimal(18,2))) as paid_amount
    , cast(sum(e.paid_amount)/count(*) as decimal(18,2))as paid_per_visit
from core.encounter e
    left join ccsr.long_condition_category p
        on e.primary_diagnosis_code = p.normalized_code
        and p.condition_rank = 1
where e.encounter_type = 'acute inpatient'
group by
      p.ccsr_category
    , p.ccsr_category_description
    , p.ccsr_parent_category
    , p.body_system
order by visit_count desc;

ED Visits by CCSR Category and Body System

select
      p.ccsr_category
    , p.ccsr_category_description
    , p.ccsr_parent_category
    , p.body_system
    , count(*) as visit_count
    , sum(cast(e.paid_amount as decimal(18,2))) as paid_amount
    , cast(sum(e.paid_amount)/count(*) as decimal(18,2))as paid_per_visit
from core.encounter e
    left join ccsr.long_condition_category p
        on e.primary_diagnosis_code = p.normalized_code
        and p.condition_rank = 1
where e.encounter_type = 'emergency department'
group by
      p.ccsr_category
    , p.ccsr_category_description
    , p.ccsr_parent_category
    , p.body_system
order by visit_count desc;