ICD-10-CM Codes
I00-I99
I10-I16
I16-
2023 ICD-10-CM Diagnosis Code I16.1

2023 ICD-10-CM Diagnosis Code I16.1

Hypertensive emergency

2017 - New Code

2018

2019

2020

2021

2022

2023

Billable/Specific Code

I16.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM I16.1 became effective on October 1, 2022.
This is the American ICD-10-CM version of I16.1 - other international versions of ICD-10 I16.1 may differ.

The following code(s) above I16.1 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to I16.1:

I00-I99
2023 ICD-10-CM Range I00-I99
Diseases of the circulatory system
Type 2 Excludes
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Diseases of the circulatory system
I10-I16
2023 ICD-10-CM Range I10-I16
Hypertensive diseases
Type 1 Excludes
- neonatal hypertension (P29.2)
- primary pulmonary hypertension (I27.0)
Type 2 Excludes
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Use Additional
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Hypertensive diseases
I16
ICD-10-CM Diagnosis Code I16
Hypertensive crisis
Code Also
- any identified hypertensive disease (I10-I15)
Hypertensive crisis

ICD-10-CM I16.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

304 Hypertension with mcc
305 Hypertension without mcc

Convert I16.1 to ICD-9-CM

Code History

2017 (effective 10/1/2016): New code
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to I16.1:

Code Also: D59.39

ICD-10-CM Diagnosis Code D59.39
Other hemolytic-uremic syndrome
Applicable To
- Atypical (nongenetic) hemolytic uremic syndrome
- Secondary hemolytic-uremic syndrome
Code First
- , if applicable, any associated:
- COVID-19 (U07.1)
- complications of kidney transplant (T86.1-)
- complications of heart transplant (T86.2-)
- complications of liver transplant (T86.4-)
Code Also
- , if applicable, any associated condition, such as:
- hypertensive emergency (I16.1)
- malignant neoplasm (C00-C96)
- systemic lupus erythematosus (M32.-)
Use Additional
- code, if applicable, for adverse effect to identify drug (T36-T50 with fifth or sixth character 5)

Diagnosis Index entries containing back-references to I16.1:

Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
ICD-10-CM Diagnosis Code I10
Essential (primary) hypertension
Includes
high blood pressure
hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Type 1 Excludes
hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Type 2 Excludes
essential (primary) hypertension involving vessels of brain (I60-I69)
essential (primary) hypertension involving vessels of eye (H35.0-)
- emergency I16.1

ICD-10-CM Codes Adjacent To I16.1

I13.11 …… with stage 5 chronic kidney disease, or end stage renal disease

I13.2 Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease

I15 Secondary hypertension

I15.0 Renovascular hypertension

I15.1 Hypertension secondary to other renal disorders

I15.2 Hypertension secondary to endocrine disorders

I15.8 Other secondary hypertension

I15.9 Secondary hypertension, unspecified

I16 Hypertensive crisis

I16.0 Hypertensive urgency

I16.1 Hypertensive emergency

I16.9 Hypertensive crisis, unspecified

I20 Angina pectoris

I20.0 Unstable angina

I20.1 Angina pectoris with documented spasm

I20.2 Refractory angina pectoris

I20.8 Other forms of angina pectoris

I20.9 Angina pectoris, unspecified

I21 Acute myocardial infarction

I21.0 ST elevation (STEMI) myocardial infarction of anterior wall

I21.01 ST elevation (STEMI) myocardial infarction involving left main coronary artery

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code I16.1

Hypertensive emergency

Diseases of the circulatory system

Hypertensive diseases

Hypertensive crisis

Other hemolytic-uremic syndrome

Essential (primary) hypertension