ICD-10 Mapping Tables
About mapping
The term mapping refers to the process of linking or associating concepts from one
system to concepts in another system. Mapping tables are useful if data are recorded
in one classification but need to be reported in another. They are also useful for
determining the comparability of two classifications. In this case, the tables give
an insight into the changes made to ICD-10 to create ICD-10-AM. Mapping also highlights differences between different versions of a classification, such
as: deleted codes, new codes, expanded or more specific codes.
Maps can be one-to-one maps or one-to-many maps
One-to-one map - a single ICD-10 code maps to a single
ICD-10-AM code, for example:
- ICD-10 code C00.0 Malignant neoplasm of external upper lip
maps to ICD-10-AM code C00.0 Malignant neoplasm of external upper lip
- ICD-10 code B23.1 HIV disease resulting in (persistent) generalised lymphadenopathy
maps to ICD-10-AM code B23.8 HIV disease resulting in other specified conditions
One-to-many map - a single ICD-10 code maps to more than
one ICD-10-AM code, for example:
- ICD-10 code C91.0 Acute lymphoblastic leukaemia maps to either ICD-10-AM
code C91.00 Acute lymphoblastic leukaemia, without mention of remission
or ICD-10-AM code C91.01 Acute lymphoblastic leukaemia, in remission
Where one-to-many maps exist, it is important to identify which maps are alternative
maps and which maps are additive
(maps that need to be added together to adequately reflect the ICD-10 code). Please
refer to notes on
Column E: ICD-10-AM Map and Column G: Additive map (+) for more
detail.
ICD-10 to ICD-10-AM mapping tables
The ICD-10 to ICD-10-AM mapping tables have been created to demonstrate the relationship
between the codes in the World Health Organization's ICD-10 (including updates)
and the First, Second, Third, Fourth, Fifth and Sixth Editions of ICD-10-AM.
The tables represent forward maps of every valid ICD-10 code (including optional
fifth character modifiers).
The official WHO updates to ICD-10 have been included in
the tables. Therefore, the list of ICD-10 codes in the tables for each new Edition may differ slightly to take account of changes to codes made by the
WHO Update
Reference Committee.
The tables do not include backward maps, that is, lists of the valid ICD-10-AM codes
mapped to ICD-10 code/s. Therefore, some ICD-10-AM codes are not included in the
tables. For example, O09 Duration of pregnancy was created in ICD-10-AM
First Edition, but does not appear in the tables because it has no relationship
to any existing ICD-10 code. These mappings may be found at ICD-10-AM to ICD-10 Mappings.
There are six(sets of) mapping tables:
The files are comma delimited text format with double inverted commas ('') as text
qualifiers (see below for details of columns contained within each file). The files
should be imported in an application, such as Microsoft Excel or Microsoft Access,
for optimal use..
Important information about external cause codes in ICD-10-AM
The concepts of place of occurrence and activity in relation to external cause of
injury are classified differently in the various editions of ICD-10-AM. This is important
to understand when interpreting the mapping tables.
In ICD-10-AM First Edition, place of occurrence and activity are classified as the
fourth and fifth characters respectively of certain external cause codes.
In ICD-10-AM Second Edition, place of occurrence and activity are classified as
Y92 and Y93 respectively.
In ICD-10-AM Third, Fourth, Fifth and Sixth Editions, place of occurrence and activity
are classified as Y92 and U50?U73 respectively.
Place of Occurrence & Activity code mapping
Mapping tables up to and including ICD-10-AM Fifth Edition:
In these earlier mapping tables, all valid ICD10 codes appear at fifth
digit level in order to represent place of occurrence and activity detail. This
is shown in Extract 1, below - ICD code W20 Struck by thrown, projected
or falling object is expanded with every valid fourth digit from 0-home
to 9-unspecified place and for every valid fifth digit from 0 -...sports activity
to 9 - ...unspecified activity. (Note: the extract below only shows the beginnings
of the map which would continue until W20.99 is mapped in column B.) (For further
information on the use of additive maps for external causes, see the notes on Column
G: Additive maps - extracts 7 & 8)
Extract 1 - Fifth edition map for ICD-10 code W20 (incomplete view of map)
Mapping tables from ICD-10-AM Sixth Edition:
From Sixth Edition, the place of occurrence and activity details are presented in
separate files that specifically map between the ICD10 fourth and fifth character
modifiers and the ICD-10-AM codes Y92 and U50-U73. The main disease code file now
shows only the direct map of the three-digit ICD-10 external cause code. The files
Place= and Activity= provide the map of the ICD-10 fourth and fifth characters.
Extracts 2, 3 and 4, below, demonstrate the use of the three files:
Specifically,
|
(ICD-10) |
(ICD-10-AM) |
|
1.
W20 |
maps to W20
Struck by ... object
(Extract 2) ---> insert link |
|
2. Place=0 |
maps to Y92.09, or Y92.00, or Y92.01 (etc) (Extract 3) --> insert
link |
|
3. Activity=0 |
maps to U71, or U70.8, or U70.0 or U50.09 (etc.) Extract 4) ---> insert
hyperlink |
Extract 2: ICD-10-AM Sixth Edition maps - disease code file - W00-X29
Extract 3: ICD-10-AM Sixth Edition maps - Place=.txt file
Extract 4: ICD-10-AM Sixth Edition mapping - Act=.txt file
The columns in the files
Column A: Counter
Counter added to ensure order of codes and maps is maintained.
Column B: ICD-10 Code
The ICD-10 code being mapped. Or, in the case of the files Place= and Act=
(Sixth Edition), it is the ICD-10 fourth or fifth character modifiers.
Column C: WHO Update
Indicates whether the code has been added or deleted by the World Health Organization
1 = code added
2 = code deleted
Column D: ICD-10 Code Descriptor
An ICD-10 text descriptor for the ICD-10 code in column B
Column E: ICD-10-AM Map
The ICD-10-AM map(s) for the ICD-10 code in column B. The maps are presented in
line data so that if there is more than one map to the ICD-10 code (one-to-many
map) these are presented on subsequent lines
The ICD-10-AM code on the first line is the primary map - that is, the
'best match' for the ICD-10 code in column B. This selection is made based on:
- the best match code descriptor
- the code to which the concept is indexed
- coding convention
Generally, where 'unspecified' and 'other' codes exist in ICD-10-AM these are the
'best match' maps and are listed first and second respectively. All subsequent maps
are listed in numerical order - these are referred to as secondary maps.
Secondary maps have a relationship to the code being mapped but are not additive
(see column G below).
Use the first map (primary map) if you only require one code.
Column F: Australian Update
Indicates wheter the ICD-10-AM code is an Australian addition or deletion.
1 = code added
2 = code deleted
Therefore, any new Australian codes created for that edition of ICD-10-AM, will
be noted with a '1' in column F.
The use of '2' was used in earlier mapping tables as an indicator for ICD-10 codes
that were not in ICD-10-AM (eg: ICD-10 code B21.2 is mapped to B21 and flagged with
a '2' as the fourth digits are not in ICD-10-AM). However, it was decided that this
flag was not truly indicative of a deleted ICD-10-AM code and therefore '2' has
not been used for maps from Sixth Edition.
Column G: Additive map (+)
Sometimes more than one ICD-10-AM code is required to complete the map to ICD-10.
In these cases the primary and any secondary maps are listed first followed by the
additional maps. The additional maps are annotated with a plus (+) sign in column
G. Extract 5 gives an example from the Third Edition mapping tables.
Extract 5 - Third Edition maps
Specifically,
|
ICD-10
|
S22.11 Multiple fractures of thoracic spine, open |
|
|
maps to |
|
ICD-10-AM
|
S22.11 Multiple fractures of thoracic spine and (+) |
|
|
S21.81 Open wound (of any part of thorax) communicating with a fracture |
Where an ICD-10 code has primary and secondary maps either map can be used with
the additional code to complete the map. Extract 6 shows how this is depicted in
the mapping tables.
Extract 6 - Fourth Edition maps: additive map for code
S62.51
Specifically,
|
ICD-10 |
S62.51 Fracture of thumb, open |
|
|
maps to |
|
ICD-10-AM |
S62.50 Fracture of thumb, part unspecified and (+) |
|
|
S61.81 Open wound (of any part of wrist and hand) communicating with a fracture |
|
|
or |
|
|
S62.51 Fracture of proximal phalanx of thumb and (+) |
|
|
S61.81 Open wound (of any part of wrist and hand) communicating with a fracture
|
|
|
or |
|
|
S62.52 Fracture of distal phalanx of thumb and (+) |
|
|
S61.81 Open wound (of any part of wrist and hand) communicating with a fracture
|
External cause codes may have primary and secondary maps and require additive codes
Y92 and U50-U73 to complete the map to ICD-10. As mentioned earlier, these codes
are listed as additive codes in the mapping tables from First to Fifth Edition of
ICD-10-AM. Extracts 7 & 8 are examples of how this is depicted in the earlier
mapping tables. (For mapping to ICD-10-AM Sixth edition, refer to the notes on Place
of Occurrence & Activity code mapping above.).
Extract 7 - Fourth Edition maps - additive maps for code W09.31
Specifically,
|
ICD-10 |
W09.31 Fall involving playground equipment, sports and athletics area, while engaged
in leisure activity |
|
|
maps to |
|
ICD-10-AM |
W09.9 Fall involving unspecified playground equipment and (+) |
|
|
Y92.3- Sports and athletics area and (+)
|
|
|
U72 Leisure activity, not elsewhere classified |
|
|
or |
|
|
W09.8 Fall involving other specified playground equipment and (+)
|
|
|
Y92.3- Sports and athletics area and (+)
|
|
|
U72 Leisure activity, not elsewhere classified |
|
|
or |
|
|
W09.0 Fall involving tree house and (+) |
|
|
Y92.3- Sports and athletics area and (+) |
|
|
U72 Leisure activity, not elsewhere classified |
|
|
See other ICD-10-AM W09.- codes for further maps in descending order.
|
Where there is only one primary map but different additive codes the maps will look
like this:
Extract 8 - Fifth Edition maps: additive maps for code W04.21
Specifically,
|
ICD-10 |
W04.21 Fall while being carried or supported by other persons, school, other institution
and public administrative area, while engaged in leisure activity |
|
|
maps to |
|
ICD-10-AM |
W04 Fall while being carried or supported by other persons and (+) |
|
|
Y92.29 Other specified institution and public administrative area and
(+)
|
|
|
U72 Leisure activity, not elsewhere classified |
|
|
or |
|
|
W04 Fall while being carried or supported by other persons
and (+) |
|
|
Y92.21 School and (+) |
|
|
U72 Leisure activity, not elsewhere classified |
|
|
or |
|
|
W04 Fall while being carried or supported by other persons and (+) |
|
|
Y92.22 Health service area and (+) |
|
|
U72 Leisure activity, not elsewhere classified |
Column H: ICD-10-AM Code Descriptor
An ICD-10-AM text descriptor for the ICD-10-AM code in field 5.
For further information please email
Marla Tun.
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ICD-10-AM
to ICD-10 mapping tables
General information
These tables provide one-to-one mappings to ICD-10 Second Edition for each Australian
code each edition of ICD-10-AM (First, Second, Third, Fourth, Fifth and Sixth Editions).
It can be assumed that all other ICD-10-AM codes not included in the tables are
exactly the same as the codes in ICD-10.
The one-to-one mapping was achieved by recoding the ICD-10-AM concept in ICD-10.
In the majority of cases this will result in the ICD-10-AM code being mapped to
the code immediately above it in the hierarchy of both classifications (e.g. E10.11
maps to E10.1 in ICD-10). However, sometimes a concept will be coded to a different
rubric in each classification. For example, Treacher Collins Syndrome is coded to
Q87.04 in ICD-10-AM and Q75.4 in ICD-10 creating what looks like an error in the
sequence when viewing the mapping table.
The one-to-one map is sometimes difficult when a concept can map to more than one
concept in ICD-10 and should be noted by those using the tables for research purposes.
For example, iatrogenic pneumothorax was introduced as J93.2 in ICD-10-AM First
Edition and is mapped to J93.8 Other pneumothorax but it could be argued
that J95.8 Other postprocedural respiratory disorders
is also appropriate. In these cases preference is given to a map within the hierarchy
in which the ICD-10-AM code resides (J93.2 maps to J93.8).
Fields included
The fields included in these tables are:
- ICD-10-AM Code
- ICD-10-AM Code Descriptor
- ICD-10 Map
Values within the "ICD-10 Map" field
Some concepts in ICD-10-AM do not have equivalent concepts in ICD-10 and in those
cases the map will be "nil". For example, the ICD-10-AM code O09 Duration of pregnancy
has no equivalent in ICD-10.
"Place=" relates to the ICD-10 subdivision for "place of occurrence" of the external
cause of injury. The single character subdivision in ICD-10 has been expanded in
ICD-10-AM to a full code and therefore maps to the single character subdivision
in ICD-10.
"Act =" relates to the ICD-10 subdivision for "activity" of the external cause of
injury. The single character subdivision in ICD-10 has been expanded in ICD-10-AM
to a full code and therefore maps to the single character subdivision in ICD-10.
ICD-10-AM to ICD-10 Mapping Tables
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