Groundbreaking: First-Ever HCC RAF Score Accessible Through REST API
First-Ever HCC RAF Score Accessible Through REST API
Check Now
Image depicting the concept of elevating provider support and enhancing concurrent coding for risk adjustment in healthcare.
Elevate Provider Support:
Enhance Your Concurrent Coding
for Risk Adjustment
Check Now
ICD-10-CM Codes I00-I99 I26-I28 I27 I27.21
icd10cm search icon
Search Suggestions:

ICD-10-CM Diagnosis Code I27.21

Effective Date: 10/01/2017 To 09/30/2025

Secondary pulmonary arterial hypertension

CMS-HCC-V24 CMS-HCC-V28 RxHCC Age Gender Maternity Acute or Chronic MCC
85 226 183 -- -- -- Chronic No
Applicable To for I27.21:

  • (Associated) (drug-induced) (toxin-induced) pulmonary arterial hypertension NOS

  • (Associated) (drug-induced) (toxin-induced) (secondary) group 1 pulmonary hypertension

Code Also for I27.21:

  • associated conditions if applicable, or adverse effects of drugs or toxins, such as:

  • adverse effect of appetite depressants (T50.5X5)

  • congenital heart disease (Q20-Q28)

  • human immunodeficiency virus [HIV] disease (B20)

  • polymyositis (M33.2-)

  • portal hypertension (K76.6)

  • rheumatoid arthritis (M05.-)

  • schistosomiasis (B65.-)

  • Sjögren syndrome (M35.0-)

  • systemic sclerosis (M34.-)

Back-references to I27.21
  • Hypertension, hypertensive(accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    • pulmonary I27.20
      • arterial(associated) (drug-induced) (toxin-induced) I27.21
        • group 1(associated) (drug-induced) (toxin-induced) I27.21
          • secondary
            • arterial I27.21
          • Chapter, Section and Diagnosis Prefix for I27.21
            I00-I99 :

            Diseases of the circulatory system

            I26-I28 :

            Pulmonary heart disease and diseases of pulmonary circulation

            I27 :

            Other pulmonary heart diseases