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Presented: 12/17/13
CPT Updates 2014 1
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ICD-10-CM Conventions & General Coding Guidelines
March 26, 2014
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Presented: 12/17/13
CPT Updates 2014 2
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Disclaimer: It is impossible to review every ICD-10-CM Convention and General Guideline in 60 minutes. Every effort has been made to capture the most significant Conventions and General Guidelines. This presentation is meant to enhance, but does not replace, your personal review of the Conventions and General Guidelines.
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Agenda
• ICD-10-CM:– Conventions
• Trends
– General Coding Guidelines• Trends
• Questions
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Conventions
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Conventions
• Coders must understand conventions
• Found in 2014 Draft of ICD-10-CM book and training manuals
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Conventions
• Alphabetic Index and Tabular List– ICD-10-CM has:
• Alphabetic Index- alphabetical list of terms and their corresponding code
• Tabular List- structured chronological list of codes divided into chapters based on body system or condition
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Conventions
• Alphabetic Index consists of the following: • Index of Diseases and Injury
• Index of External Causes of Injury
• Table of Neoplasms
• Table of Drugs and Chemicals
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Conventions
• Format and Structure
– ICD-10-CM Tabular List contains categories, subcategories, codes
– Characters for categories, subcategories and codes may be a letter or number
– Categories are 3 characters
– A 3 character category that has no further subdivision is equivalent to a code
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Conventions
• Format and Structure– Subcategories are 4 or 5 characters
– Codes may be 3, 4, 5, 6 or 7 characters in length
– A code that has an applicable 7th character is considered invalid without the 7th character
Tip: watch for the box with a check mark and “4th”, “5th”, “6th”, “7th” and “x7th” in it indicating the number of characters needed for a complete code
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Conventions
• Placeholder Character- letter “X” has 2 uses
• 5th character for some 6 character codesT56.0X2S Toxic effect of lead and its compounds, intentional self-harm, sequela
• Code has less than 6 characters and 7th character required, “X” is assigned for all characters less than 6
S17.0XXA Crushing injury of larynx and trachea, initial encounter
Tip: decimal does not count as a character
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Conventions
• Placeholder Character- letter “X”
Tip: Make sure your coders correctly use this placeholder character
– Coders incorrectly apply 7th character in the 5th or 6th character place
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Conventions
• Seventh Characters
– Provides further specificity about conditionO64.3XX1 Obstructed labor due to brow presentation, fetus 1
S02.110B Type I occipital condyle fracture, initial encounter for open fracture
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Conventions
• Abbreviations
– Not Elsewhere Classified (NEC)
• ICD-10-CM contains codes to classify any and all conditions
• Alphabetic Index uses NEC for a code description that directs the coder to the Tabular List showing an Other Specified code description
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Conventions
• Abbreviations
– Not Otherwise Specified (NOS)
• Use when the documentation is insufficient to assign a more specific code
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Conventions
• Punctuation– Parentheses ( )
• Used in both Alphabetic Index and Tabular List
• Enclose supplementary words that may be present or absent in the statement of a disease without affecting the code number to which it is assigned
• Terms within the parentheses are nonessential modifiers
Hemophilia (classical) (familial) (hereditary)
I10, Essential (primary) hypertension
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Conventions
• Punctuation
– Brackets [ ] • Used in Tabular List to enclose synonyms, alternative
wordings, or explanatory phrases
B06, Rubella [German measles]
• Used in Alphabetic Index to identify manifestation codes
Disease, Alzheimer’s G30.9 [F02.80]
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Conventions
• Punctuation– Colon :
• Used in Tabular List after an incomplete term which needs 1 or more modifiers following the colon to make it assignable to a given category
• Used with “includes” and “excludes” notes
G73.7 Myopathy in diseases classified elsewhereExcludes1: myopathy in:
scleroderma (M34.82)
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Conventions
• Other format differences from ICD-9-CM– Symbols not included in ICD-10-CM:
• Lozenge
• Section Mark §
• Braces }
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Conventions
• Other format differences from ICD-9-CM– Dashes
• Used in ICD-10-CM Alphabetic Indexes and the Tabular List
• Indexes utilize dash at end of code number to indicate code is incomplete
• To determine additional character(s), locate code in Tabular List, review the options, assign appropriate code
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Conventions
• Other format differences from ICD-9-CM
– Dashes
Fracture, pathologicankle M84.47-
carpus M84.44-
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Conventions
• Other format differences from ICD-9-CM– Dashes
• Tabular List, dash preceded by a decimal point (.-) indicates incomplete code
• To determine additional characters, locate referenced category or subcategory in Tabular List, review options, assign the appropriate code
J43 Emphysema
Excudes1: emphysematous (obstructive) bronchitis (J44.-)
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Conventions
• Instructional Notes– Variety of notes appear in both the Alphabetic
Index and Tabular List of ICD-10-CM
– The various notes are:• “includes”
• “excludes”
• “code first”
• “use additional code”
• cross reference
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Conventions
• Inclusion Notes– Used in Tabular List to clarify conditions included
within a particular chapter, section, category, subcategory, code
– List of inclusions terms not exhaustive, may include diagnoses not listed in inclusion note
– Introduced by word “includes” when appearing at beginning of chapter, section, category
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Conventions
• Inclusion Notes
K25 Gastric UlcerIncludes: erosion (acute) of stomach
pylorus ulcer (peptic)
stomach ulcer (peptic)
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Conventions
• Inclusion Notes– At code level, the word “includes” does not precede
the list of terms included in the code
K31.5 Obstruction of duodenumConstriction of duodenumDuodenal ileus (chronic)Stenosis of duodenumStricture of duodenumVolvulus of duodenum
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Conventions
• Exclusion Notes– ICD-9-CM contains a single type of excludes note
– ICD-9-CM has 2 different meanings leaving it to coder to determine correct meaning
– In ICD-10-CM, 2 types of excludes notes:• Excludes1
• Excludes2– Either or both may appear under a category, subcategory, or
code
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Conventions
• Excludes1– Is a pure “excludes” note
– Means not coded here
– Indicates the code excluded should never be used at the same time as code above the Excludes1 note
– Used when 2 conditions cannot occur together• congenital form versus acquired form of the same
condition
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Conventions
• Excludes1
Q79.5 Other congenital malformations of abdominal wallExcludes1: umbilical hernia (K42.-)
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Conventions
• Excludes2– Means not included here
– Indicates condition excluded is not part of condition represented by the code, but a patient may have both conditions at same time
– When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together if patient has both conditions
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Conventions
• Excludes2J37.1 Chronic laryngotracheitis
Excludes2: acute laryngotracheitis (J04.2)
acute tracheitis (J04.1)
Tip: Make sure your coders understand Excludes1 and Excludes2 notes
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Conventions
• Code First and Use Additional Code Notes
– Some conditions require an underlying etiology code and manifestation code
– For these conditions, ICD-10-CM (similar to ICD-9-CM) requires underlying condition be sequenced first followed by manifestation
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Conventions
• Code First and Use Additional Code Notes
– “Use additional code” note appears at etiology code
– “Code first” note appears at manifestation code
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Conventions
• Use Additional Code Note
G30 Alzheimer’s disease
Use additional code to identify:
dementia with behavioral disturbance (F02.81)
dementia without behavioral disturbance (F02.80)
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Conventions
• Code First Note
F02 Dementia in other diseases classified elsewhere
Code first the underlying physiological condition, such as Alzheimer’s (G30.-)
F02.80 Dementia in other diseases classified elsewhere, without behavioral disturbance
F02.81 Dementia in other diseases classified elsewhere, with behavioral disturbance
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Conventions
• Cross Reference Notes
– In ICD-10-CM Alphabetic Index to advise coder to look elsewhere before assigning a code
– “See”, “See Also” and “See Condition” are same as those in ICD-9-CM
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Conventions
• Cross Reference Notes
Pyocele
-mastoid – see Mastoiditis, acute
-sinus (accessory) – see sinusitis
-turbinate (bone) J32.9
-urethra (see also Urethritis) N34.0
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Conventions
• Relational Terms– “And” means “and/or” when appears in code title
within the ICD-10-CM Tabular List
– “With” means “associated with” or “due to” when appears in code title, Alphabetic Index, or instructional note in Tabular List
• “With” in the Alphabetic Index is sequenced immediately following the main term, not in alphabetic order
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Conventions
• Relational Terms
Salpingitis (catarrhal) (fallopian tube) (nodular) (pseudofollicular) (purulent) (septic) N70.91
with oophoritis N70.93
acute N70.01
with oophoritis N70.03
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Conventions
• Additional Conventions– Age edit symbols
• Newborn = 0 years• Pediatric = 0 – 17 years• Maternity age = 12 – 55 years• Adult age = 15 – 124 years
– Sex edit symbols• Male• Female
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General Coding Guidelines
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General Coding Guidelines
1. Locating a Code in ICD-10-CM
– First locate term in Alphabetic Index
– Verify code in Tabular List
Tip: Read instructional notes in Alphabetic Index and Tabular List, and let them be your guide to the appropriate code
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General Coding Guidelines
2. Level of Detail in Coding
– Diagnosis codes reported at their highest number of characters available
– Codes may be 3, 4, 5, 6 or 7 characters in length
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General Coding Guidelines
3. Code or Codes from A00.0 through T88.9, Z00 – Z99.8
– Identify diagnoses, symptoms, conditions, problems, complaints, other reason(s) for the encounter/visit
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General Coding Guidelines
4. Signs and Symptoms
– Acceptable for reporting when related definitive diagnosis has not been established or confirmed by provider
– Chapter 18 (Symptoms, Signs, and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (codes R00.0 – R99) contains many, but not all codes for symptoms
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General Coding Guidelines
5. Conditions that are an Integral Part of a Disease Process
– Signs and symptoms associated routinely with a disease process should not be assigned as additional codes UNLESS otherwise instructed by the classification
Tip: make sure your coders understand what is routinely associated with each disease process to avoid over-coding
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General Coding Guidelines
6. Conditions that are not an Integral Part of a Disease Process
– Signs and symptoms that are NOT ROUTINELY associated with a disease process should be coded when present
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General Coding Guidelines
7. Multiple Coding for a Single Condition
– Etiology/manifestation convention– “Use additional code”– “Code first”– “Code, if applicable, any causal condition first”– Multiple codes may be needed for sequela, complication
codes and obstetric codes to fully describe condition
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General Coding Guidelines
8. Acute and Chronic Conditions
– If same condition described as both acute (subacute) and chronic, and separate subentries exist in Alphabetic Index at same indentation level, code both and sequence the acute (subacute) code first
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General Coding Guidelines
9. Combination Code
– Used to classify:
• Two diagnoses, or– A diagnosis with an associated secondary process
(manifestation)– A diagnosis with an associated complication
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General Coding Guidelines
10. Sequela (Late Effects)
– Residual effect after acute phase of an illness or injury has terminated
– No time limit on when sequela code can be used
– Residual effect may appear early, may occur months or years later
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General Coding Guidelines
10. Sequela (Late Effects)
– Normally 2 codes required- condition or nature of sequelasequenced 1st and sequela code is sequenced 2nd
• Exception- code for sequela is followed by a manifestation code identified in Tabular List and title, or sequela code has been expanded to include the manifestation(s)
Tip: The code for the acute phase of an illness or injury that led to the sequela is never used with a code for the late effect
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General Coding Guidelines
11. Impending or Threatened Condition
– Did occur code as confirmed diagnosis– Did not occur look in Alphabetic Index for “impending” or
“threatened”– Reference main term entries for “Impending” and “Threatened”– Subterms are listed assign the given code– Subterms are not listed code the existing underlying
conditions and not the condition described as impending or threatened
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General Coding Guidelines
12. Reporting Same Diagnosis Code More than Once
– Each unique ICD-10-CM diagnosis code may be reported only once for an encounter
– Applies to bilateral conditions when there are no distinct codes identifying laterality or 2 different conditions classified to the same diagnosis code
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General Coding Guidelines
13. Laterality
– If there is a code specifying left, right or bilateral assign the appropriate code based on documentation
– If no bilateral code exists and the condition is bilateral assign separate codes for both left and right
– If the side is not identified in the documentation assign the code for the unspecified side
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General Coding Guidelines
14. Documentation for BMI and Pressure Ulcer Stages
– Body Mass Index (BMI), depth of non-pressure chronic ulcers and pressure ulcer stage codes- code assignment may be based on medical record documentation from clinicians who are not the patient’s provider (i.e., physician or other qualified healthcare practitioner legally accountable for establishing the patient’s diagnosis), since this information is typically documented by other clinicians involved in the care of the patient (e.g., a dietitian often documents the BMI and nurses often document the pressure ulcer stages).
– The associated diagnosis (such as overweight, obesity, or pressure ulcer) must be documented by the patient’s provider
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General Coding Guidelines
• Documentation for BMI and Pressure Ulcer Stages
– If there is conflicting medical record documentation, either from the same clinician or different clinicians, the patient’s attending provider should be queried for clarification
– The BMI codes should only be reported as secondary diagnoses and they must meet the definition of a reportable additional diagnosis to be reported
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General Coding Guidelines
15. Syndromes
– Follow Alphabetic Index guidance
– In absence of Alphabetic Index guidance, assign codes for manifestations of syndrome
– Additional manifestation codes that are not integral to the disease process may be assigned when condition does not have a unique code
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General Coding Guidelines
16. Documentation of Complication of Care– Not all conditions that occur during or following medical care or
surgery are classified as complications
– Must be a cause-and-effect relationship between care provided and the condition
– Must be an indication in documentation that is it a complication
– Query provider if complication is not clearly documented
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General Coding Guidelines
17. Borderline Diagnosis
– Diagnosis is coded as confirmed unless the classification provides a specific entry, (borderline diabetes)
– Not considered uncertain diagnoses
– Query for clarification if documentation is unclear
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General Coding Guidelines
18. Use of Sign/Symptom/Unspecified Codes
– Instances exist when signs/symptoms or unspecified codes most accurately reflect healthcare encounter
– Appropriate to use signs and/or symptoms codes when definitive diagnosis has not been established
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General Coding Guidelines
• Use of Sign/Symptom/Unspecified Codes
– Appropriate to report “unspecified” code when clinical information isn’t known or available to assign more specific code
– Code each encounter to level of certainty known
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References
• ICD-10-CM The Complete Official Draft Code Set, 2014 – Optum Book
• DeVault, K., Barta, A., & Endicott, M. (2014). ICD-10-CM Coder Training Manual. Chicago, IL: AHIMA
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Questions?
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