Is ICD-10-CM code I27 billable?

No, I27 (Other pulmonary heart diseases) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code I27 belong to?

I27 belongs to Chapter 9 of the ICD-10-CM tabular list: I00–I99 (Diseases of the Circulatory System).

I27

Non-Billable

ChapterI00–I99

Rankcategory

Description

Other pulmonary heart diseases

About ICD-10-CM code I27

Other pulmonary heart diseases is classified in ICD-10-CM as code I27, part of I00-I99 Diseases of the Circulatory System, within Pulmonary heart disease and diseases of pulmonary circulation (I26-I28). Its status is non-billable, meaning reporting it requires a deeper, more specific code.

Use a more specific code (3 billable, 2 non-billable)

I27.0Primary pulmonary hypertension I27.1Kyphoscoliotic heart disease I27.2Other secondary pulmonary hypertensionhas subcodes I27.8Other specified pulmonary heart diseaseshas subcodes I27.9Pulmonary heart disease, unspecified

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

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.-)

Clinical Hierarchy

BillableHas subcodes

CH9Diseases of the circulatory system (I00-I99)

I26-I28Pulmonary heart disease and diseases of pulmonary circulation (I26-I28)

I27Other pulmonary heart diseasesNot billable

I27.0Primary pulmonary hypertensionBillable

I27.1Kyphoscoliotic heart diseaseBillable

I27.2Other secondary pulmonary hypertensionSubcodes

I27.8Other specified pulmonary heart diseasesSubcodes

I27.9Pulmonary heart disease, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I27:

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Other pulmonary heart diseases.

Search PCS Codes