AHCCCS Encounter Keys Newsletter

Encounter Keys is a periodic supplement to the Encounter Manual containing updates and system changes.

2024 Editions

September-October 2024

July-August 2024

May-June 2024

March-April 2024

  • Age Changes
  • Category of Service
  • Codes; Changes
  • Code Descriptions
  • Coverage Code
  • Indicators
  • Modifiers
  • Place of Service
  • Procedure Codes & Descriptions
  • Procedure Daily Maximum
  • Provider Types
  • Revenue Code
  • Standard Service Set

January-February 2024

  • Age Change; AHC; BH Diagnosis
  • Category of Service; Codes
  • Coverage Codes; Description Change; Edits
  • End Date Change Indicators; Limit & Frequency
  • Modifiers
  • Modifiers Removed
  • Place of Service
  • Procedure Daily Maximum; Provider Type
  • Prior Authorizaton Procedure Daily Maximum
  • Prior Authorization; Revenue Code

2023 Editions

November-December 2023

  • Age Change
  • Category of Service
  • Code Updates
  • Coverage Codes
  • ICD-10 DX codes
  • Medicare Indicator
  • Modifier Updates
  • Place of Service
  • Prior Authorizaton Procedure Daily Maximum
  • Provider Type
  • Reference Screen

September-October 2023

  • Age Change
  • Begin Date Change
  • Category of Service
  • Classification
  • Codes
  • Coverage Codes
  • Modifiers
  • Place of Service
  • Prior Authorization
  • Procedure Code Indicators
  • Provider Type

July-August 2023

  • Age Change
  • Category of Service Codes
  • Coverage Codes
  • Code Changes/Additions
  • Code Description Changes
  • Date Changes
  • ICD-10 Codes
  • Procedure Daily Max
  • Medicare, TPL
  • Modifiers
  • Place of Service
  • Prior Authorization
  • Provider Type
  • Reference Screens

May-June 2023

  • Age Change
  • Clarification of 41899
  • Coding Manager Updates
  • Bill Type
  • Category of Service
  • Codes
  • Coverage Codes
  • Description Changes
  • ICD-10 Codes Indicators
  • Modifiers
  • Prior Authorization
  • Provider Type
  • Procedure Daily Max
  • Place of Service
  • Procedure Code, Indicators & Values
  • Reference Screens
  • Revenue Code

March-April 2023

  • Age Change
  • Anesthesia
  • ASC Codes
  • Bill Type
  • Category of Service
  • Codes
  • Coverage Codes
  • Definition Changes
  • End Date ICD-10 Codes Indicators
  • Medicare Indicator
  • Modifiers
  • Place of Service
  • Procedure Daily Max
  • Provider Type
  • Revenue Code VFC

January-February 2023

  • Age Change
  • Anesthesia
  • ASC Code
  • Category of Service
  • Codes
  • Coverage Codes
  • Medicare IndicatorModifiers
  • Modifiers
  • Place of Service
  • Prior Authorization
  • Procedure Daily Maximum
  • Provider Type
  • Revenue Codes

2022 Editions

November–December 2022

  • Age Change
  • Codes
  • Coverage Codes
  • Date Changes
  • Encounter Cycle Schedule
  • Indicators
  • Limits & Frequencies
  • Medical COS
  • Encounter Processing Direction Regarding Dual Non-Covered Medicare Services
  • Medicare Indicator
  • Medical Coding Changes
  • Modifiers
  • Place of Service
  • Procedure Daily Maximum
  • Prior Authorization
  • Provider Type
  • Revenue Code

September-October 2022

  • Age Changes
  • Codes
  • Coverage Codes Diagnosis Codes
  • Edits Medicare Indicators
  • Prior Authorizations Procedure Daily Max Modifiers
  • Medicare Indicator Modifier Definition Change
  • Modifiers
  • Provider Type
  • Place of Service
  • Screen Indicators Revenue Code

July-August 2022

  • Age Changes
  • Anesthesia Maximum Units
  • Category of Service
  • Code Updates
  • Coverage Codes
  • Medicare Indicator Modifier Definition Change
  • Modifiers
  • Place of Service
  • Procedure Daily Maxi-mum, Limit & Frequency
  • Revenue Code RF124 & RF769 Updates

May-June 2022

  • Age Changes
  • ASC Codes
  • Code Updates
  • Coverage Codes
  • Date Change ICD‐10 Medicare Indicator
  • Modifiers
  • Place of Service
  • Provider Types
  • Place of Service
  • Procedure Daily Maxi-mum, Limit & Frequency
  • Rate Change Recycle Codes Revenue Code RF124 Screen
  • RFC25 Screen

March-April 2022

  • Notice from the Office of the Inspector General
  • Coverage Codes
  • Encounter File Pro-cessing Schedule
  • Age Changes
  • Code Updates
  • Coverage Code
  • Follow Up Days
  • Limits & Frequencies
  • Modifiers
  • New Codes
  • Provider Types
  • Place of Service
  • Procedure Daily Maxi-mum
  • Revenue Code
  • RF129 MUE
  • Occurrence Span

January-February 2022

  • Age Change Codes
  • Coverage Codes
  • Codes
  • New Codes Indicator
  • Prior Authorizaton
  • Modifiers
  • Modifier Date Change
  • Mt. Graham
  • Place of Service
  • Procedure Daily Maxi‐mum
  • Provider Type
  • Revenue Codes

2021 Editions

November - December, 2021

  • Benefit Limits
  • Codes
  • Encounter Processing Schedules
  • Coverage Code
  • Lab Indicator
  • Modifier End Date
  • Provider Type
  • Modifiers
  • New Modifiers
  • New Codes
  • Modifier Description Changes
  • Place of Service
  • Provider Type
  • Procedure Daily Limit
  • Third Party Liability TPL Indicators

September - October, 2021

  • Age Changes
  • Age Limits
  • Classification Code
  • Codes
  • Code Descripton
  • Changes
  • Coverage Codes
  • End Date—ASC Rates
  • End Date
  • New Codes
  • Limits
  • New Edits
  • Modifiers
  • Provider Type
  • Place of Service
  • RF724 Updates
  • Rate Changes
  • TPL Updates
  • Therapeutic Foster Care

July - August, 2021

  • Age Changes
  • Category of Service
  • Code Updates
  • Covid-19
  • Coverage Codes
  • New Codes
  • Frequency/Limits
  • Indicators
  • Modifiers
  • Provider Type
  • Place of Service
  • Reference Screen

May - June, 2021

  • Age Changes
  • Category of Service
  • Codes and Code Changes
  • Coverage Codes
  • Date Changed
  • Dental Codes
  • Description Change
  • Frequency/Limits
  • Limits
  • Modifiers
  • Place of Service
  • Provider Type
  • Reference Screen
  • Revenue Codes
  • Table Update
  • Units

March - April, 2021

  • Age Limits
  • Category of Service Codes
  • Coverage Codes
  • Description of Code Changes
  • Modifiers
  • Order/Referring Provider Indicator
  • Place of Service
  • Provider Type
  • Procedure Daily Maximum
  • Revenue Codes

January - February, 2021

  • Age
  • Code Descriptions Revised
  • Codes
  • Coverage Code
  • Codes Added
  • Code Changes
  • ICD‐10 Codes
  • Frequency
  • J Codes
  • Limits
  • Modifier End Date
  • Modifiers
  • Provider Type
  • Place of Service
  • Reference Screen
  • Revenue Code
  • Sex Indicator
  • TPL Indicator

2020 Editions

November/December 2020

  • Admission Source
  • Age Changes
  • Begin Date Changes
  • Category of Service Codes
  • Coverage Codes
  • Code Changes
  • Code Descriptions
  • Follow Up Days
  • Frequency/Limits
  • Medicare Indicator
  • Procedure Daily Maximum
  • Place of Service
  • Provider Type
  • Modifiers
  • Reference Screen
  • Revenue Code
  • Sex Indicator

September/October 2020

  • Age Changes
  • Category of Service Codes
  • Coverage Codes
  • Code Descriptions
  • New Codes
  • Limits Medicare Coverage
  • Modifiers
  • Place of Service
  • Provider Type
  • Revenue Codes

July/August 2020

  • Category of Service Codes
  • Coverage Code
  • Coverage Code Changes
  • Begin Date Changes
  • Age Limits/ Limits Medicare Coverage Modifiers
  • Modifiers
  • Place of Service
  • Provider Type
  • Revenue Codes

May/June 2020

  • Codes/Revenue Codes/Edit Status Report
  • Modifiers
  • Place of Service

March/April 2020

  • Age Limits/Codes
  • Coverage Code
  • Coverage Code/Code Description/Revenue Code
  • Place of Service
  • Provider Type

January/February 2020

  • Age Change/Category of Service/Code
  • Codes/Description Change/Error Code
  • Modifiers
  • Place of Service
  • Provider Type
  • Procedure Daily Maximum
  • Revenue Code

2019 Editions

November/December 2019

  • Age Change/Category of Service/Code Updat/Diagnosis Indicators/Encounter Edit Status List
  • Codes/Frequency
  • Modifier 80 for Provider Types 18 & 19 Clarification/Modifiers
  • Procedure Daily Limits
  • Provider Type
  • Place of Service
  • Revenue code/Sex Indicator

September/October 2019

  • Age Change Bill Type Code Updates Coverage Code
  • Class Code
  • Place of Service
  • Prior Authorization
  • Procedure Daily Limit
  • Provider Type

July/August 2019

  • Age Limit
  • Encounter Processing Schedule
  • Category of Service
  • Codes
  • Modifiers
  • Place of Service

May/June 2019

  • Age Change
  • Category of Service (COS)
  • Coverage Code
  • Definition Change
  • ICD-10
  • Modifiers
  • Place of Service (POS)
  • Procedure Daily Limit
  • Procedure Daily Maximum
  • Provider Type
  • Revenue Code

March/April 2019

  • Age Change
  • Code Changes
  • Coverage Code
  • Frequency Limits
  • Modifiers
  • Place of Service (POS)
  • Procedure Daily Limit
  • Provider Type
  • Revenue Code

January/February 2019

  • Encounter Processing Schedules Coverage Code & Coverage Code Changes
  • Age Limits
  • Modifiers
  • Provider Type
  • Place of Service Revenue Code

2018 Editions

November/December 2018

  • Admission Source Code Age Changes Encounter Processing Schedules
  • Category of Service Code Definition Update
  • Code Updates
  • Coverage Code(s) ICD-10 Procedure Class Code Laboratory Indicator Limits
  • Modifier Updates
  • Place of Service
  • Procedure Daily Maximum
  • Provider Type
  • New Codes
  • Revenue Code

September/October 2018

  • Age Change
  • Coverage Code Change
  • Codes End Dated
  • Codes
  • Modifiers
  • End Date of Modifiers
  • MUE Units
  • Place of Service
  • Procedure Daily Maximum Limits
  • Provider Type
  • New Edits

July/August 2018

  • OPFS PGM Update (Three Hospitals) Encounter Processing Schedules
  • Category of Service
  • New Edits
  • Laboratory Indicator Modifier
  • Modifiers
  • Procedure Daily Maximum
  • Place of Service
  • New Codes
  • ICD codes
  • Provider Type

May/June 2018

  • Age Change
  • Bill Type Code Description
  • Code Changes
  • Coverage Code Change
  • Modifiers
  • Place of Service
  • Provider Type
  • Revenue Code

March/April 2018

  • Date Changes
  • Gender
  • Procedure Code Indicator
  • Notce of Rate Change‐Ground Ambulance
  • APR‐DRG Calculator Correcton
  • Outpatent Hospital Website Fee Schedule Updated
  • Correction
  • Coverage Code
  • Modifiers
  • Procedure Daily Maximum
  • Revenue Code
  • Place of Service
  • Provider Type

January/February 2018

  • Age
  • Coverage Codes
  • End Date
  • Codes
  • Procedure Daily Limit
  • Adult ER Benefits
  • Place of Service
  • Modifiers
  • Provider Type

2017 Editions

November/December 2017

  • Age
  • Category of Service
  • Codes
  • Definition Change
  • Encounter Edit Status Report
  • Indicators
  • Limits
  • Revenue Codes
  • Modifier
  • Place of Service (POS)

September/October 2017

  • Category of Service
  • Code Updates
  • Definition Changes
  • Gender
  • Coverage Codes
  • Edit
  • Reminder Regarding Timeliness of Encounter Submissions
  • Modifiers
  • Place of Service
  • Provider Type

July/August 2017

  • Category of Service
  • Code Updates
  • Gender
  • Coverage Codes
  • Edit
  • Reminder Regarding Timeliness of Encounter Submissions
  • Modifiers
  • Place of Service
  • Provider Type

May/June 2017

  • Code Updates
  • Coverage Code
  • Limits
  • Modifiers
  • Place of Service
  • Provider Type

March/April 2017

  • Encounter File Processing Schedule
  • Code Updates
  • Modifiers
  • Place of Service
  • Modifiers
  • Provider Type
  • Revenue Codes

January/February 2017

  • Edit
  • Limits and Frequency
  • Code Updates
  • Place of Service
  • Modifiers
  • Provider Type
  • Revenue Codes

2016 Editions

November/December 2016

  • Age Limit
  • Category of Service
  • Coverage Code Update
  • Procedure Daily Limits
  • Provider Type
  • Place of Service
  • Modifiers
  • Revenue Codes

September/October 2016

  • Age Change
  • Edit Change
  • Coverage Codes
  • End Date
  • FFS Rates for New Ambulance Provider
  • OUTPATIENT HOSPITAL COST-TO-CHARGE RATIOS FOR 10/01/2016
  • Modifier(s)
  • Place of Service (POS)
  • Provider Type
  • Revenue Code

July/August 2016

  • Edits
  • Encounter Processing Schedule
  • Edit Status Report
  • FFS Rate Correction CPT 81528
  • Family Planning
  • Code Updates

May/June 2016

  • APR-DRG Calculator Update
  • Encounter File Processing Schedule
  • Hospice Rate Clarification
  • Date Change
  • Coverage Code
  • Provider Type
  • Revenue Codes
  • Codes
  • Modifiers
  • Place of Service

March/April 2016

  • Age Change
  • Coverage Codes
  • Category of Service
  • Modifier(s)
  • Place of Service
  • Provider Type

January/February 2016

  • Sanction Update
  • Age Change
  • Coverage Codes
  • New Codes
  • Codes
  • Modifier(s)
  • Place of Service (POS)
  • Provider Type (PT)

Contact

Encounter Unit staff is available Monday through Friday (excluding State holidays)
to assist contractors in resolving encounter errors or to research specific encounter
issues. Questions regarding the validator or TI should be submitted to the AHCCCSTIEncounters@azahcccs.gov e-mail address. All other encounter questions, including those concerning mainfame, should be sent to the AHCCCSEncounters@azahcccs.gov e-mail address.