ICD-10 Code B20: HIV disease coding, documentation, and billing rules
ICD-10 Code B20: Clinical definition and billable status ICD-10 code B20 is the billable, specific ICD-10-CM diagnosis code for Human immunodeficiency virus [HIV] disease, maintained by the Centers for Medicare and Medicaid Services (CMS). It’s classified under ICD-10-CM Chapter 1 (Certain infectious and parasitic diseases, A00-B99). B20 is the HIV ICD-10 code assigned when a […]
ICD-10 Code H82.9: Vertiginous syndromes, unspecified ear
Most vertigo claims that get denied are not wrong about the diagnosis – they are wrong about the sequencing. ICD-10 Code H82.9 is a manifestation code, meaning it describes a symptom arising from another condition, and payers expect the underlying etiology to appear first on the claim. Miss that step, and even a perfectly documented […]
ICD-10 Code E68: Sequelae of hyperalimentation
ICD-10 Code E68 covers sequelae of hyperalimentation: lasting effects that remain once excess nutrient intake has resolved. It carries a Code First instruction, so coders must sequence the underlying condition before E68 or risk a denied claim. This guide covers its definition, billable status, documentation requirements, and how it differs from E67. ICD-10 Code E68: […]
ICD-10 Code C19: Malignant neoplasm of rectosigmoid junction
Rectosigmoid junction tumors sit at one of the most debated anatomical boundaries in colorectal cancer coding. Get the location wrong in the clinical note, and a clean claim becomes a denial. ICD-10 Code C19 covers this specific junction. It applies only when the tumor genuinely involves the transition zone between the sigmoid colon and rectum. […]
ICD-10 code H35.89: Other specified retinal disorders
Ophthalmology coders encounter H35.89 when a patient presents with a retinal condition that is clinically documented but does not match any of the more specific codes within the H35 category. Payers scrutinize “other specified” codes more closely than specific ones, and a vague or incomplete diagnosis note is the fastest route to a denial. This […]
ICD-10 code C10.1: Malignant neoplasm of anterior surface of epiglottis
When pathology confirms malignancy on the anterior surface of the epiglottis, the choice between C10.1 and C32.1 trips up even experienced coders. The two structures are anatomically adjacent, but they sit in different ICD-10-CM chapters and carry different coding rules. Getting this wrong delays reimbursement and flags the claim for audit. This reference guide covers […]
ICD-10 code G80.8: Other cerebral palsy
ICD-10 code G80.8 is the billable ICD-10-CM code for other cerebral palsy: presentations that fall outside the named motor subtypes (G80.0 through G80.4) but are documented specifically enough to avoid the catch-all G80.9. This article explains what G80.8 covers, how it fits the G80 hierarchy, and the documentation a clinician needs to support it. This […]
ICD-10 code G09: Sequelae of CNS inflammatory disease
ICD-10 Code G09: Definition and billable status ICD-10 Code G09 is the ICD-10-CM diagnosis code for sequelae of inflammatory diseases of the central nervous system (CNS). It applies once a condition such as bacterial meningitis or encephalitis has resolved but left residual damage behind. G09 is billable only as a secondary code, sequenced after the […]
ICD-10 code E35: Disorders of endocrine glands in diseases classified elsewhere
ICD-10 code E35 covers disorders of endocrine glands in diseases classified elsewhere. It’s a billable ICD-10-CM code for secondary endocrine gland dysfunction caused by another documented disease. As a manifestation code, E35 can never stand alone on a claim: the underlying disease’s etiology code must be sequenced first. This guide covers how to sequence E35 […]
ICD-10 code M47.9: Spondylosis, unspecified
ICD-10 code M47.9 covers spondylosis, unspecified: Degenerative spine disease without a documented region. Billable, but often flagged.