I27.29 — Other secondary pulmonary hypertension
Is I27.29 billable?
Yes — I27.29 is billable for FY2027. I27.29 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I27.29 may be submitted for encounters from October 1, 2026 through September 30, 2027.
I27.29 at a glance
| Code | I27.29 |
|---|---|
| Description | Other secondary pulmonary hypertension |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I27.29 group to?
I27.29 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 314Other Circulatory System Diagnoses with MCCmedical
- 315Other Circulatory System Diagnoses with CCmedical
- 316Other Circulatory System Diagnoses without CC/MCCmedical
How is I27.29 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I27.29. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Hypertension, hypertensive › pulmonary › group 5 (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › with › cor pulmonale (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › with › right heart ventricular strain/failure (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › with › unclear multifactorial mechanisms (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › due to › hematologic disorders (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › due to › metabolic disorders (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › due to › specified systemic disorders NEC (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › pulmonary › secondary › specified NEC (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
Code also
Two codes may be needed to describe the condition fully. Whether I27.29 is sequenced first depends on the reason for the encounter.
- other associated disorders, if known, such as:
- chronic myeloid leukemia (C92.10-C92.22)
- essential thrombocythemia (D47.3)
- Gaucher disease (E75.22)
- hypertensive chronic kidney disease with end stage renal disease (I12.0, I13.11, I13.2)
- hyperthyroidism (E05.-)
- hypothyroidism (E00-E03)
- polycythemia vera (D45)
- sarcoidosis (D86.-)
Inclusion terms
Alternative wording in documentation that is classified to I27.29.
- Group 5 pulmonary hypertension
- Pulmonary hypertension with unclear multifactorial mechanisms
- Pulmonary hypertension due to hematologic disorders
- Pulmonary hypertension due to metabolic disorders
- Pulmonary hypertension due to other systemic disorders
Excludes1 — never code together — inherited from I27.2
The conditions below can never be reported together with I27.29 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Eisenmenger's syndrome (I27.83)
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I27.29, but a patient may have both at the same time. When documentation supports it, I27.29 and the excluded code may both be reported.
- 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.-)
Code also — inherited from I27.2
Two codes may be needed to describe the condition fully. Whether I27.29 is sequenced first depends on the reason for the encounter.
- associated underlying condition
How long has I27.29 existed?
I27.29 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.