Coma scale, best verbal response, confused
conversation, in the field [EMT or ambulance]
R40.2361
Coma scale, best motor response, obeys commands, in
the field [EMT or ambulance]
Explanation:
When individual scores for the Glasgow coma scale are
documented, one code from each category is needed to complete the
scale. The seventh character indicates when the scale was recorded and
should match for all three codes. Assign a code from subcategory R40.24-
Glasgow coma scale, total score, when only the total and not the
individual score(s) is documented.

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Guidelines and Examples
Chapter 18. Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified
ICD-10-CM 2017
Chapter 18. Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified
472
ICD-10-CM 2017
h.
Death NOS
Code R99, Ill-defined and unknown cause of mortality, is only for use in the
very limited circumstance when a patient who has already died is brought
into an emergency department or other healthcare facility and is
pronounced dead upon arrival. It does not represent the discharge
disposition of death.
i.
NIHSS stroke scale
The NIH stroke scale (NIHSS) codes (R29.7- -) can be used in conjunction
with acute stroke codes (I63) to identify the patient's neurological
status and the severity of the stroke. The stroke scale codes should be
sequenced after the acute stroke diagnosis code(s).
At a minimum, report the initial score documented. If desired, a facility
may choose to capture multiple stroke scale scores.
See Section I.B.14. for information concerning the medical record
documentation that may be used for assignment of the NIHSS codes.
Systemic inflammatory response syndrome (SIRS) due to acute gallstone
pancreatitis
K85.10
Biliary acute pancreatitis without necrosis or infection
R65.10
Systemic inflammatory response syndrome (SIRS) of
noninfectious origin without acute organ dysfunction
Explanation:
When SIRS is documented with a noninfectious condition
without subsequent infection documented, the code for the underlying
condition such as pancreatitis should be assigned followed by the
appropriate code for SIRS of noninfectious origin, either with or without
associated organ dysfunction.

Chapter 19. Injury, Poisoning and Certain Other Consequences of External Causes
ICD-10-CM 2017
Chapter 19. Injury, Poisoning and Certain Other Consequences of External Causes
Guidelines and Examples
ICD-10-CM 2017
473
Chapter 19.
Injury, Poisoning and Certain Other Consequences of
External Causes
(S00–T88)
Chapter Specific Guidelines with Coding Examples
The chapter specific guidelines from the ICD-1
0
-CM Official Guidelines for
Coding and Reporting have been provided below. Along with these guidelines
are coding examples, contained in the shaded boxes, that have been developed
to help illustrate the coding and/or sequencing guidance found in these
guidelines.

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- Winter '19