ICD-10-CM Conventions &
General Coding Guidelines
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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Karri Murphy, RHIA, CCS
Karri is a Senior Client Partner over Quality for G2N, Inc G2N provides coding chargemaster and other Inc. G2N provides coding, chargemaster and other revenue cycle consulting services.
Karri Murphy, RHIA, CCS
• Karri has been a coder for over 20 years, working through all types of coding and coding management ultimately ending up in
th l
the revenue cycle
• B.S. in HIM from ISU; Credentialed as an RHIA and CCS, and an S o SU; C ede t a ed as a a d CCS, a d a AHIMA-Approved ICD-10-CM/PCS Trainer
B k d i l t h it l ith i i ll f t
• Background in large system hospitals, with experience in all facets of the revenue cycle
Agenda
• ICD-10-CM:
C
ti
– Conventions
• TrendsGeneral Coding Guidelines
– General Coding Guidelines
• Trends
Q
ti
C
ti
Conventions
• Coders must understand conventions
• Found in 2014 Draft of ICD-10-CM book and
training manuals
Conventions
• Alphabetic Index and Tabular List
– ICD-10-CM has:
• Alphabetic Index- alphabetical list of terms and their corresponding code
corresponding code
• Tabular List- structured chronological list of codesTabular List structured chronological list of codes
divided into chapters based on body system or condition
Conventions
• Alphabetic Index consists of the following:
• Index of Diseases and Injury
• Index of External Causes of Injury • Index of External Causes of Injury • Table of NeoplasmsTable of Neoplasms
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
Conventions
• Format and Structure
Subcategories are 4 or 5 characters
– Subcategories are 4 or 5 characters
– Codes may be 3 4 5 6 or 7 characters in length
Codes may be 3, 4, 5, 6 or 7 characters in length
– A code that has an applicable 7
pp
thcharacter is
considered invalid without the 7
thcharacter
Tip: watch for the box with a check mark and “4th” “5th”
Tip: watch for the box with a check mark and 4 , 5 , “6th”, “7th” and “x7th” in it indicating the number of
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 T56.0X2S Toxic effect of lead and its compounds, intentional self-harm, sequela
• Code has less than 6 characters and 7th character • Code has less than 6 characters and 7 character
required, “X” is assigned for all characters less than 6
Conventions
• Placeholder Character- letter “X”
Tip: Make sure your coders correctly use
this placeholder character
this placeholder character
– Coders incorrectly apply 7
thcharacter in the 5
thor
6
thcharacter place
Conventions
• Seventh Characters
– Provides further specificity about condition
O64.3XX1 Obstructed labor due to brow presentation, fetus 1
S02.110B Type I occipital condyle fracture, initial encounter for yp p y ,
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 directs the coder to the Tabular List showing an Other Specified code description
Conventions
• Abbreviations
– Not Otherwise Specified (NOS)
• Use when the documentation is insufficient to assign a ifi d
Conventions
• Punctuation
( )
– Parentheses ( )
• Used in both Alphabetic Index and Tabular List
• Enclose supplementary words that may be present or • 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
T ithi th th ti l difi
• Terms within the parentheses are nonessential modifiers Hemophilia (classical) (familial) (hereditary)
Conventions
• Punctuation
– Brackets [ ]
• Used in Tabular List to enclose synonyms, alternative
wordings or explanatory phrases wordings, or explanatory phrases
B06, Rubella [German measles]
• Used in Alphabetic Index to identify manifestation codes Disease, Alzheimer’s G30.9 [F02.80]
Conventions
• Punctuation
C l
– Colon :
• Used in Tabular List after an incomplete term which needs 1 or more modifiers following the colon to make g it assignable to a given category
• Used with “includes” and “excludes” notes
G73.7 Myopathy in diseases classified elsewhere
Excludes1: myopathy in:
l d (M34 82) scleroderma (M34.82)
Polling Question #1
Have you practiced coding in
ICD 10 CM?
ICD-10-CM?
A. Yes, a lot
B. Yes, a little
C. Not yet
D. What is ICD-10-CM?
Conventions
• Other format differences from ICD-9-CM
– Symbols not included in ICD-10-CM:
• LozengeS ti M k § • Section Mark § • Braces }
Conventions
• Other format differences from ICD-9-CM
– Dashes
• Used in ICD-10-CM Alphabetic Indexes and the Tabular List
Tabular List
• Indexes utilize dash at end of code number to indicate
code is incompletep
• To determine additional character(s), locate code in Tabular List, review the options, assign appropriate code
Conventions
• Other format differences from ICD-9-CM
– Dashes
Fracture, pathologic
ankle M84 47 ankle M84.47-carpus
M84.44-Conventions
• Other format differences from ICD-9-CM
– Dashes
• Tabular List, dash preceded by a decimal point (.-) indicates incomplete code
indicates incomplete code
• To determine additional characters, locate referenced category or subcategory in Tabular List, review g y g y ,
options, assign the appropriate code
J43 Emphysema J43 Emphysema
Conventions
• Instructional Notes
– Variety of notes appear in both the Alphabetic
Index and Tabular List of ICD-10-CM
– The various notes are:
• “includes”“ l d ” • “excludes” • “code first”
• “use additional code” • use additional code • cross reference
Conventions
• Inclusion Notes
– Used in Tabular List to clarify conditions included
within a particular chapter, section, category,
subcategory code
subcategory, code
– List of inclusions terms not exhaustive, may
include diagnoses not listed in inclusion note
include diagnoses not listed in inclusion note
– Introduced by word “includes” when appearing at
beginning of chapter section category
Conventions
• Inclusion Notes
K25
Gastric Ulcer
Includes: erosion (acute) of stomach
pylorus ulcer (peptic)
t h l ( ti )
Conventions
• Inclusion Notes
At code level the word “includes” does not precede
– At code level, the word includes does not precede
the list of terms included in the code
K31 5 Obstruction of duodenum K31.5 Obstruction of duodenum
Constriction of duodenum Duodenal ileus (chronic) Stenosis of duodenum Stenosis of duodenum Stricture of duodenum Volvulus of duodenum
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 – Either or both may appear under a category, subcategory, or
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
E
l d
1
t
Excludes1 note
Conventions
• Excludes1
Q79.5 Other congenital malformations of
abdominal wall
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
Wh
E
l ld
2
t
d
d
– When an Excluldes2 note appears under a code,
it is acceptable to use both the code and the
excluded code together if patient has both
excluded code together if patient has both
Conventions
• Excludes2
J37.1 Chronic laryngotracheitis
Excludes2: acute laryngotracheitis (J04.2)
t t h iti (J04 1) acute tracheitis (J04.1)
Tip: Make sure your coders understand
Excludes1 and Excludes2 notes
Excludes1 and Excludes2 notes
Conventions
• Code First and Use Additional Code Notes
– Some conditions require an underlying etiology
code and manifestation code
– For these conditions, 10-CM (similar to
ICD-9-CM) requires underlying condition be
Conventions
• Code First and Use Additional Code Notes
– “Use additional code” note appears at etiology
code
Conventions
• Use Additional Code Note
G30 Alzheimer’s diseaseUse additional code to identify: Use additional code to identify:
dementia with behavioral disturbance (F02.81) dementia without behavioral disturbance
dementia without behavioral disturbance (F02.80)
Conventions
• Code First Note
F02 Dementia in other diseases classified elsewhere
Code first the underlying physiological condition such 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
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
Conventions
• Cross Reference Notes
Pyocelemastoid see Mastoiditis acute
-mastoid – see Mastoiditis, acute -sinus (accessory) – see sinusitis -turbinate (bone) J32 9turbinate (bone) J32.9
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
appears in code title, Alphabetic Index, or
instructional note in Tabular List
Conventions
• Relational Terms
Salpingitis (catarrhal) (fallopian tube) (nodular)
(pseudofollicular) (purulent) (septic) N70 91 (pseudofollicular) (purulent) (septic) N70.91 with oophoritis N70.93
acute N70 01 acute N70.01
Conventions
• Additional Conventions
– Age edit symbols
Age edit symbols
• Newborn = 0 years
• Pediatric = 0 – 17 years
• Maternity age = 12 55 years • Maternity age = 12 – 55 years • Adult age = 15 – 124 years
– Sex edit symbols
M l • Male • Female
Polling Question #2
Have you heard of the conventions
presented thus far?
presented thus far?
A. Yes, all of them
B Y
f th
B. Yes, some of them
C. No, never heard of them!
D. Where can I find them?
G
l C di
G id li
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
Index and Tabular List, and let them be your
guide to the appropriate code
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
General Coding Guidelines
3. Code or Codes from A00.0 through T88.9,
Z00
Z99 8
Z00 – Z99.8
– Identify diagnoses, symptoms, conditions,
problems, complaints, other reason(s) for the
t
/ i it
General Coding Guidelines
4. Signs and Symptoms
– Acceptable for reporting when related definitive
diagnosis has not been established or
diagnosis has not been established or
confirmed by provider
– Chapter 18 (Symptoms, Signs, and Abnormal
Clinical and Laboratory Findings, Not Elsewhere
Cl
ifi d (
d
R00 0
R99)
t i
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
process should not be assigned as additional codes
UNLESS otherwise instructed by the classification
Tip: make sure your coders understand what is Tip: make sure your coders understand what is
routinely associated with each disease process to avoid over-coding
General Coding Guidelines
6. Conditions that are not an Integral Part of a
Di
P
Disease Process
– Signs and symptoms that are NOT ROUTINELY
associated with a disease process should be
d d
h
t
General Coding Guidelines
7.
Multiple Coding for a Single Condition
– Etiology/manifestation convention – “Use additional code”
“Code first” – “Code first”
– “Code, if applicable, any causal condition first”
– Multiple codes may be needed for sequela, complication d d b t t i d t f ll d ib diti
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
Alphabetic Index at same indentation level, code
both and sequence the acute (subacute) code
first
Polling Question #3
What are you using when practicing coding
in ICD 10 CM?
in ICD-10-CM?
A. Book
B E
d
B. Encoder
C. Book and encoder
General Coding Guidelines
9.
Combination Code
– Used to classify:
• Two diagnoses, orTwo diagnoses, or
– A diagnosis with an associated secondary process (manifestation)
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
General Coding Guidelines
10. Sequela (Late Effects)
– Normally 2 codes required- condition or nature of sequela sequenced 1st and sequela code is sequenced 2nd
• Exception- code for sequela is followed by a manifestation code • 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
or injury that led to the sequela is never used
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 g y g conditions and not the condition described as impending or threatened
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
General Coding Guidelines
13.
Laterality
– If there is a code specifying left, right or bilateral assign the appropriate code based on documentation
If bil t l d i t d th diti i bil t l i
– 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 – If the side is not identified in the documentation assign the
General Coding Guidelines
14. Documentation for BMI and Pressure Ulcer
Stages
g
– 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
p y q p g y
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
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
General Coding Guidelines
15. Syndromes
– Follow Alphabetic Index guidance
– In absence of Alphabetic Index guidance, assign codes for if t ti f d
manifestations of syndrome
– Additional manifestation codes that are not integral to the
disease process may be assigned when condition does not disease process may be assigned when condition does not have a unique code
Polling Question #4
Are you excited about ICD-10-CM?
A Y
I
’t
it f
O t b
1 2014!
A. Yes, I can’t wait for October 1, 2014!
B. I’m okay with it, but I wouldn’t call it excited
C. No, I love ICD-9!
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 – Must be a cause-and-effect relationship between care provided
and the condition
– Must be an indication in documentation that is it a complicationp
General Coding Guidelines
17. Borderline Diagnosis
– Diagnosis is coded as confirmed unless the classification provides a specific entry, (borderline diabetes)
– Not considered uncertain diagnoses
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
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
References
• ICD-10-CM The Complete Official Draft Code
S t 2014
Set, 2014 –
Optum BookD V lt K B t A & E di tt M (2014) ICD 10 CM • DeVault, K., Barta, A., & Endicott, M. (2014). ICD-10-CM
Q
ti
?
Questions?
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