What the criteria ask for at each level

DC 6847 - 38 CFR §4.97

Rating	What the record has to show
0%	Documented sleep disorder breathing, but asymptomatic.
30%	Persistent daytime hypersomnolence (excessive sleepiness despite adequate time in bed).
50%	Requires use of a breathing assistance device such as a CPAP machine.
100%	Chronic respiratory failure with CO2 retention or cor pulmonale, or requires a tracheostomy.

What the C&P exam actually measures

Much of this one is a records review. An examiner cannot diagnose sleep apnea from an interview, and with no sleep study in the file there is usually nothing to rate.

Whether a sleep study exists, and what it found.
Whether a breathing assistance device is prescribed and required - not simply owned.
Daytime sleepiness, and whether the record describes it as persistent.
Height and weight, and what else is already service-connected, both of which bear on a secondary argument.

DC 6847 is one of the few codes where a veteran can be plainly symptomatic and still have no finding to rate, because the finding lives in a test rather than in an examination.

Two records, read against the criteria

Two records with the same diagnosis and the same machine in the house.

Outcome	What the record held	How the criteria read it
Read at 50%	Sleep study confirming the diagnosis. A breathing assistance device prescribed the same year, twelve months of compliance data, and treatment notes recording the device as required.	The 50% level under DC 6847 is set by a required breathing assistance device. The prescription plus the documented requirement is the finding the level turns on.
Read at 30%	The same sleep study. A device was prescribed, tried for six weeks and abandoned. Treatment notes describe falling asleep during the day and at stoplights.	No device is in use, so the requirement the 50% level asks about is not established. Persistent daytime hypersomnolence is documented, and that is the 30% level.

The schedule's own words

Ratings turn on specific terms, and a record that describes the same reality in different language often reads as a lower rating. These are the words this code measures:

persistent daytime hypersomnolence
requires the use of a breathing assistance device (CPAP)

Evidence that moves this rating

A sleep study (the non-negotiable foundation - get one scheduled now)
CPAP prescription and 12 months of compliance data
Spouse/partner statement describing snoring, gasping, and breathing pauses

What your statement has to cover

Doctors chart symptoms; they rarely chart consequences. That part is yours, and it is usually what separates a documented rating from a reported one.

Describe daytime sleepiness in real terms: falling asleep at work, at red lights, mid-conversation.
If prescribed a CPAP, say so explicitly and attach the prescription.
If you can't tolerate the CPAP, have your doctor document exactly why (claustrophobia, mask leaks, PTSD panic).

Where records for this condition fall short

Where sleep apnea records commonly come up short:

No sleep study
The condition can be described across a hundred treatment notes and still have no finding attached to it. The study is the foundation of the whole code.
A device in the pharmacy record but no note saying it is required
The 50% level asks whether the device is required. A prescription on its own leaves that question open rather than answering it.
Sleepiness described as tiredness
The schedule’s term is persistent daytime hypersomnolence. "Tired a lot" and "falls asleep at stoplights" can describe the same life and do not read the same way.
The person who witnessed it never asked to write anything
Nobody observes their own breathing while asleep. A partner describing the snoring, the gasping and the pauses is often the only firsthand account that exists.

What sleep apnea can lead to 10 documented pathways

A secondary claim runs through a condition the VA already accepts, so the argument about your service is already won. What is left is the medical link - and a nexus opinion has to name the mechanism, not just the pair.

Can lead to	The mechanism a nexus has to state
Heart disease (ischemic / CAD)	Repeated nighttime oxygen drops and cardiovascular stress cause heart disease and arrhythmias.
Erectile dysfunction / FSAD	Hypoxia, fragmented sleep, and vascular stress cause erectile dysfunction.
Hypothyroidism / thyroid conditions	Sleep apnea is linked to endocrine disruption, including thyroid dysfunction.
Chronic sinusitis / rhinitis	CPAP airflow dries and irritates upper-airway tissue, promoting chronic sinusitis.
High blood pressure (hypertension)	Repeated nighttime oxygen drops stress the cardiovascular system.
GERD (acid reflux)	CPAP pressure forces air into the stomach, pushing acid upward.
Depression	Chronic fatigue and oxygen deprivation disrupt mood regulation.
Migraine headaches	Morning headaches are a classic symptom of nighttime oxygen deprivation.
Asthma / COPD	Hypoxia and pressure shifts inflame the airways.
Tinnitus (ringing in the ears)	Oxygen drops damage inner-ear cells; chronic loud snoring acts as acoustic trauma.

Before you spend money on this claim

VA ratings do not add. Each new rating applies only to the part of you the VA still counts as unimpaired, then rounds to the nearest ten - so from 70%, a new 10% condition leaves you at exactly 70% and changes your payment by nothing.

That does not make the claim worthless; it can still matter for TDIU, for SMC, or later when something else is added. But it is worth knowing before you pay for a nexus letter rather than after. Check what one more condition does at your rating - it takes a minute.

Guides on this condition

Who is behind this: Lima Charlie is written by John G., a U.S. Army veteran who went through the VA claims process himself - VSO route, then claim sharks, then finally doing it alone with the regulations open - and built this so no veteran leaves money on the table for want of knowing how the system works.
How we source and check everything, and how to tell us we got it wrong →