ICD-10-CM Codes
I00-I99 Diseases of the circulatory system
I26-I28 Pulmonary heart disease and diseases of pulmonary circulation
I27- Other pulmonary heart diseases
2021 ICD-10-CM Diagnosis Code I27.23

2021 ICD-10-CM Diagnosis Code I27.23

Pulmonary hypertension due to lung diseases and hypoxia

2018 - New Code

2019

2020

2021

Billable/Specific Code

I27.23 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM I27.23 became effective on October 1, 2020.
This is the American ICD-10-CM version of I27.23 - other international versions of ICD-10 I27.23 may differ.

Applicable To

Group 3 pulmonary hypertension

Code Also

Code Also Help

A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.

associated lung disease, if known, such as:
bronchiectasis (
ICD-10-CM Diagnosis Code J47
- J47 Bronchiectasis
  - J47.0 Bronchiectasis with acute lower respiratory i...
  - J47.1 Bronchiectasis with (acute) exacerbation
  - J47.9 Bronchiectasis, uncomplicated
J47.-
)
cystic fibrosis with pulmonary manifestations (
ICD-10-CM Diagnosis Code E84.0
Cystic fibrosis with pulmonary manifestations
Use Additional
- code to identify any infectious organism present, such as:
- Pseudomonas (B96.5)
E84.0
)
interstitial lung disease (
ICD-10-CM Diagnosis Code J84
- J84 Other interstitial pulmonary diseases
  - J84.0 Alveolar and parieto-alveolar conditions
    - J84.01 Alveolar proteinosis
    - J84.02 Pulmonary alveolar microlithiasis
    - J84.03 Idiopathic pulmonary hemosiderosis
    - J84.09 Other alveolar and parieto-alveolar condition...
  - J84.1 Other interstitial pulmonary diseases with fi...
    - J84.10 Pulmonary fibrosis, unspecified
    - J84.11 Idiopathic interstitial pneumonia
      J84.111 Idiopathic interstitial pneumonia, not otherw...
      J84.112 Idiopathic pulmonary fibrosis
      J84.113 Idiopathic non-specific interstitial pneumoni...
      J84.114 Acute interstitial pneumonitis
      J84.115 Respiratory bronchiolitis interstitial lung d...
      J84.116 Cryptogenic organizing pneumonia
      J84.117 Desquamative interstitial pneumonia
    - J84.17 Other interstitial pulmonary diseases with fi...
      J84.170 Interstitial lung disease with progressive fi...
      J84.178 Other interstitial pulmonary diseases with fi...
  - J84.2 Lymphoid interstitial pneumonia
  - J84.8 Other specified interstitial pulmonary diseas...
    - J84.81 Lymphangioleiomyomatosis
    - J84.82 Adult pulmonary Langerhans cell histiocytosis...
    - J84.83 Surfactant mutations of the lung
    - J84.84 Other interstitial lung diseases of childhood...
      J84.841 Neuroendocrine cell hyperplasia of infancy
      J84.842 Pulmonary interstitial glycogenosis
      J84.843 Alveolar capillary dysplasia with vein misali...
      J84.848 Other interstitial lung diseases of childhood...
    - J84.89 Other specified interstitial pulmonary diseas...
  - J84.9 Interstitial pulmonary disease, unspecified
J84.-
)
pleural effusion (
ICD-10-CM Diagnosis Code J90
Pleural effusion, not elsewhere classified
Applicable To
- Encysted pleurisy
- Pleural effusion NOS
- Pleurisy with effusion (exudative) (serous)
Type 1 Excludes
- chylous (pleural) effusion (J94.0)
- malignant pleural effusion (J91.0))
- pleurisy NOS (R09.1)
- tuberculous pleural effusion (A15.6)
J90
)
sleep apnea (
ICD-10-CM Diagnosis Code G47.3
Sleep apnea
Code Also
- any associated underlying condition
Type 1 Excludes
- apnea NOS (R06.81)
- Cheyne-Stokes breathing (R06.3)
- pickwickian syndrome (E66.2)
- sleep apnea of newborn (P28.3)
G47.3-
)

The following code(s) above I27.23 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 I27.23:

I00-I99
2021 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
I27.2
ICD-10-CM Diagnosis Code I27.2
Other secondary pulmonary hypertension
Code Also
- associated underlying condition
Type 1 Excludes
- Eisenmenger's syndrome (I27.83)
Other secondary pulmonary hypertension

ICD-10-CM I27.23 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

314 Other circulatory system diagnoses with mcc
315 Other circulatory system diagnoses with cc
316 Other circulatory system diagnoses without cc/mcc

Convert I27.23 to ICD-9-CM

Code History

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

Diagnosis Index entries containing back-references to I27.23:

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-)
- pulmonary I27.20
  ICD-10-CM Diagnosis Code I27.20
  Pulmonary hypertension, unspecified
  2018 - New Code 2019 2020 2021 Billable/Specific Code
  Applicable To
  Pulmonary hypertension NOS
  - due to
    - lung diseases and hypoxia I27.23
  - group 3 I27.23

ICD-10-CM Codes Adjacent To I27.23

I26.93 Single subsegmental pulmonary embolism without acute cor pulmonale

I26.94 Multiple subsegmental pulmonary emboli without acute cor pulmonale

I26.99 Other pulmonary embolism without acute cor pulmonale

I27 Other pulmonary heart diseases

I27.0 Primary pulmonary hypertension

I27.1 Kyphoscoliotic heart disease

I27.2 Other secondary pulmonary hypertension

I27.20 Pulmonary hypertension, unspecified

I27.21 Secondary pulmonary arterial hypertension

I27.22 Pulmonary hypertension due to left heart disease

I27.23 Pulmonary hypertension due to lung diseases and hypoxia

I27.24 Chronic thromboembolic pulmonary hypertension

I27.29 Other secondary pulmonary hypertension

I27.8 Other specified pulmonary heart diseases

I27.81 Cor pulmonale (chronic)

I27.82 Chronic pulmonary embolism

I27.83 Eisenmenger's syndrome

I27.89 Other specified pulmonary heart diseases

I27.9 Pulmonary heart disease, unspecified

I28 Other diseases of pulmonary vessels

I28.0 Arteriovenous fistula of pulmonary vessels

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

2021 ICD-10-CM Diagnosis Code I27.23

Pulmonary hypertension due to lung diseases and hypoxia

Cystic fibrosis with pulmonary manifestations

Pleural effusion, not elsewhere classified

Sleep apnea

Diseases of the circulatory system

Other secondary pulmonary hypertension

Essential (primary) hypertension

Pulmonary hypertension, unspecified