2027 ICD-10-CM Diagnosis Code I27.82Chronic pulmonary embolism
ICD-10-CM Codes›I00–I99›I26-I28›I27
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 267
- Chronic Condition
I27.82 is a billable ICD-10-CM diagnosis code for chronic pulmonary embolism. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 173, 175 through 176, 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 20 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pulmonary heart disease.
For Medicare Advantage risk adjustment, I27.82 maps to CMS-HCC Category 267 (Deep Vein Thrombosis and Pulmonary Embolism) under the V28 model, adding a risk factor of about 0.294 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
I27.82 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chronic pulmonary embolism
- Chronic pulmonary thromboembolism
- Chronic pulmonary thromboembolism without pulmonary hypertension
- Pulmonary thromboembolism
- Pulmonary thrombosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I27.82: its own notes plus those printed at Chapter 9. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- personal history of pulmonary embolism (Z86.711)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may 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.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if applicable, for associated long-term (current) use of anticoagulants (Z79.01)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name I27.82, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Chronic Pulmonary Embolism
persistent and long-standing pulmonary embolism.
Patient EducationClinical
Pulmonary Embolism
A pulmonary embolism (PE) is a sudden blockage in a lung artery. It usually happens when a blood clot breaks loose and travels through the bloodstream to the lungs. PE is a serious condition that can cause:
The full article covers:
- What is a pulmonary embolism (PE)?
- What causes a pulmonary embolism (PE)?
- Who is more likely to develop a pulmonary embolism (PE)?
- What are the symptoms of a pulmonary embolism (PE)?
- How is a pulmonary embolism (PE) diagnosed?
- What are the treatments for a pulmonary embolism (PE)?
- Can pulmonary embolism (PE) be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I27.82 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I27.82Overview
What is the ICD-10 code for chronic pulmonary embolism?
The ICD-10-CM code for chronic pulmonary embolism is I27.82 (sometimes written as I2782). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I27.82 (Other specified pulmonary heart diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic pulmonary embolism on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I27.82 group to?
When chronic pulmonary embolism is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 175, 176, 173, with relative weights from 0.8061 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is I27.82 a CC or MCC?
CMS lists I27.82 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 20 closely related codes in its exclusion list.
Can I27.82 be reported with Z86.711?
Not as a rule. The Excludes1 note on I27.82 lists "personal history of pulmonary embolism (Z86.711)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What HCC is I27.82?
I27.82 (chronic pulmonary embolism) maps to CMS-HCC Category 267 (Deep Vein Thrombosis and Pulmonary Embolism), commonly written as HCC 267, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 107 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. In the Part D prescription drug model it maps to RxHCC 184.
Does I27.82 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, I27.82 adds a risk adjustment factor of about 0.294 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.245 to 0.568 depending on the payment segment). HCC 267 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 267 category page.
